How to Stop Overthinking: The Neuroscience of Rumination

How to Stop Overthinking: The Neuroscience of Rumination

Have you ever lost a whole afternoon to a conversation that ended three days ago? Replaying it, picking it apart, wondering what the other person actually meant. If you have ever wondered how to stop overthinking when your brain just will not let go, here is what science can tell you. The mental loop you are stuck in has a name. It is called rumination, and according to research from Yale, it is one of the most damaging mental habits researchers can measure. The good news is that your brain is doing exactly what it is built to do, which means there are real, science-backed ways to interrupt it.

Here is the part that matters most: nothing is wrong with you. You are not weak. You are not failing at being a balanced, mindful person. You are running a survival response that worked perfectly well a hundred thousand years ago and has nothing to do with how smart, self-aware, or accomplished you are today.

I want to share what I learned from one of the smartest science journalists working today, Donna Jackson Nakazawa. She is the author of Mind Drama, a deep, accessible book about the neuroscience of rumination and how to outwit it. We sat down on the Love, Happiness & Success podcast to talk through why your brain does this, the four-step framework she has developed for getting out of it in real time, and what is hiding underneath the loop once you know how to look.

Before we go any further, I want to be honest with you. I run a coaching and counseling practice called Growing Self. Most of the people who walk in our doors with this issue have read books. They have downloaded apps. They know what they are supposed to do. The problem is not information. The problem is that your nervous system has been running this same loop for a very long time, and a paragraph in a blog post is not going to override that. What I am about to share is real, and it will give you language and tools. But the actual work, the part where you do it differently next Tuesday at 9pm with the actual person you are overthinking, is the work my team does with people every day. If you want to explore that, our individual therapy and life coaching is built for exactly this. Keep that in mind as you read.

What Is Rumination?

Rumination is the technical term for what most of us call overthinking. It is the sticky, repetitive thought spiral where you replay a past conversation or forecast a future one, locked in self-criticism or criticism of others, unable to let it go. Donna told me that nearly a third of adults have never even heard the word, which is striking when you consider that almost everyone is doing it.

Here is how Donna defines it: rumination is the loop that runs when your brain keeps loading up the same mental movie. It might be a comment your sister made at Thanksgiving. It might be the look on your manager’s face during a meeting. It might be a text you sent that has been read but not answered. The content varies. The pattern is always the same: a reel that keeps reloading, an emotional charge that keeps refreshing, and a sense in your body that something is off and will not settle.

The reason it is so hard to identify is that we have been calling it many other things. We have called it worry. We have called it processing. We have called it being thoughtful, or careful, or detail-oriented. Some of those things are real. Healthy reflection exists, and it serves you. The diagnostic clue, Donna says, is whether the loop is moving you somewhere or just keeping you stuck. If it is the latter, you are ruminating, and naming it is the first thing that gives you any leverage on it.

The good news is that the moment you have language for it, the loop loses some of its power. Most of the people I work with at Growing Self spent years calling this “I am just an overthinker” before they had a name for it. Once they did, the work got easier. We have written before about the patterns that make overthinking so hard to break, and Donna’s neuroscience adds a layer that makes the existing tools sharper. Coaching is partly about lending you language for what is happening inside you that is hard to see from the inside.

Is Overthinking a Symptom of Anxiety?

Overthinking and anxiety are related but not the same thing. Rumination, the technical term for what most of us call overthinking, has been studied for decades by Yale psychologist Susan Nolen-Hoeksema, whose work shows that rumination is one of the most robust transdiagnostic risk factors in mental health (Nolen-Hoeksema, Wisco, & Lyubomirsky, 2008). That means rumination shows up across a wide range of conditions, including depression, anxiety, and certain cognitive patterns. Ruminating does not mean you have any of those conditions. It does mean your brain is running a pattern that, unchecked over time, can contribute to them.

Here is the distinction that helped me when I started thinking about my own thinking. Anxiety tends to be future-focused. Depression tends to be past-focused. Rumination is a particular cognitive process that can serve either one. When your brain is running a worried loop about something that has not happened yet, that is a future-pointed rumination. When your brain is running a regret loop about something that already did, that is a past-pointed rumination. Both light up the same neural machinery.

This is also why rumination connects so naturally to the lens of cognitive behavioral therapy, the evidence-based approach for noticing and shifting unhelpful thinking patterns. Rumination is essentially a category of unhelpful thinking that has gotten stuck in a loop. Therapists trained in CBT have spent decades developing tools for exactly this. So have coaches, when they are well-trained in coaching psychology.

If you are wondering whether to address it on your own or whether it is time to explore whether therapy is the right next step, that is exactly the kind of question we help people answer in a free consultation. There is no version of this where you have to be in crisis to reach out. The first conversation is for figuring out what you actually need.

Why Won’t My Brain Let It Go? The Survival Response Gone Rogue

Your brain will not let it go because it is doing the thing it evolved to do. Donna calls rumination a survival response gone rogue, and the framing changes everything once you understand it. Step back across evolutionary time. Picture yourself sitting at the communal fire. The people around you are laughing. They are rolling their eyes. They are sniggering. In the world your nervous system was built for, that was a physical danger. If you were ostracized, even subtly, you might be moved further from the fire, where you could be picked off by other tribes. Social rejection was a survival threat.

Over hundreds of thousands of years, our nervous systems became exquisitely sensitive to the smallest signs of social or emotional distress. Our immune systems came along for the ride. At the very first sign of being misunderstood or excluded, our bodies prepared as if for physical danger. That same machinery is running today, except now the trigger is a text that did not get answered fast enough, an email that landed wrong, or a comment a coworker made in a meeting. The danger is mostly imagined. The biology is identical.

Donna also pointed out something I had not seen put together this way before: the same machinery is more active in women, on average, than in men. Women’s nervous systems evolved with an even more robust response to social and emotional stress, partly tied to keeping ourselves and our children safe by paying close attention to social cues. That sensitivity has been a survival advantage for the species. It is also why you, sitting in your car after a hard meeting, are running thoughts that men in your same situation are statistically less likely to be running.

If you have ever found yourself stuck in a thought loop about a relationship, you have lived a particular version of this. The same machinery is at work whether the person is a partner, a parent, a sibling, or someone you used to date. Attachment researchers have shown for decades that the people we are bonded to are wired into our survival systems. People with an anxious attachment style are particularly prone to running these loops, because the threat of disconnection registers in the nervous system as a true emergency.

What our coaches see, working with people in this every day, is that the loops are real, the biology is real, and the suffering is real. None of it means you are broken. It is also workable. That is why coaching exists. The job of a coach trained in the psychology of mindset is not to talk you out of a loop. It is to help you build the awareness and the regulation skills to interrupt it before it takes over your day.

How to Stop Overthinking at Night

You overthink at night because your default mode network gets louder when there is nothing else competing for your attention. The same brain regions that run rumination during the day are most active when you are not focused on a task (Sheline et al., 2009). Your daytime to-do list, the show you were watching, the conversation with your kid: those are all external inputs that compete with your internal narrative. When the lights go out and the room is quiet, the internal narrative gets the microphone.

This is why so many people who function fine during the day collapse into rumination at 11pm or 3am. The neural network that runs the loop has been there all day. Your daytime activity was just covering it up.

The most useful nighttime intervention I know of is to interrupt the loop the moment you notice you are inside it, rather than waiting for it to play itself out. The MIST framework I share in the next section is exactly this kind of interrupt tool, and it works whether you are at your desk at 11am or staring at the ceiling at 2am. Sleep hygiene matters too. We have written before about why you can’t sleep and the practical interventions that help. But for someone whose insomnia is driven by overthinking specifically, the work is the same as the daytime work, applied at night.

The MIST Framework: A Real-Time Tool to Interrupt Overthinking

The MIST framework is a four-step interrupt tool that helps you recognize a rumination spiral and step out of it in under a minute. Donna walked me through it live during our conversation, with my own ruminative mind as the example, and the framework worked exactly as advertised. Here is how it goes.

M is for movie montages. Your brain is running a mental reel. Your job is to name it. Specifically, you say to yourself, “Here is my old story of…” and then you fill in the blank with the actual content of what your mind has been replaying. Donna’s examples: “Here is my old story of how my voice does not matter.” “Here is my old story of how I always have to work harder than everyone else.” When I tried it on the podcast, mine came out as “Here is my old story of how I have to do all the work for everyone, all the time, and clean up after them when they do not follow through.”

I is for intense interior emotion. Once you have named the reel, you name the feeling that comes with it. Not what the feeling means. Not where it came from. Just the feeling. Anger. Fear. Anxiety. Loneliness. Exhaustion. The brain pays attention to specifics. Generic feelings will not land. When I named mine, it was angry, anxious, overwhelmed, and exhausted, all at once.

S is for somatic sensation. Your rumination shows up in your body. Find where. For some people it is a knot in the stomach. For others it is a tightness in the chest, a clench in the jaw, a heaviness in the shoulders. Mine showed up exactly where my ribs meet, in my solar plexus area. Donna’s showed up in the same spot. It is not coincidence; that is where rumination most commonly lands somatically.

T is for tied together. You bring all three pieces into a single sentence: “Here is my old story of X, which makes me feel Y, and shows up in my body here.” That sentence is your personal rumination code. Once you have it, the next time the loop starts running, you can name it as it is happening, and the naming itself takes some of the loop’s power away.

What Donna and I both noticed in real time is that articulating the code in this format pulls the rumination from inside you to outside you. You stop being the loop. You become the person watching the loop. The brain region that runs rumination, the default mode network, stops firing on the locked circuit it had been running, and the rest of your brain comes online again. That is the part where you get clarity, perspective, and access to the rest of yourself.

Why Reading This Article Is Not Enough

I want to be honest with you about something. The framework I just walked you through is real, and it works. People use it. Lives change because of it. But I would be doing you a disservice if I let you close this article thinking that reading it was the work.

Here is what almost always happens. You read an article like this one. Something clicks. You feel a little hopeful. You make a mental note to try the new approach the next time the situation comes up. And then the situation comes up, and your nervous system does what it has done for decades, and you find yourself in the same loop you have been running for years, wondering why nothing changed.

The reason is simple. You are not unmotivated, and you are not broken. You are trying to override an entire neural pattern by yourself, in the moment that pattern is most active. That is the hardest possible time to do new behavior. It is almost impossible to do alone.

What works is having someone in your corner who knows your specific patterns, who you can text after a hard moment, who can help you debrief and recalibrate before the next one. That is what coaching with a real person does. Not lectures. Not generic advice. A real, ongoing relationship with someone who is paying attention to your life.

This is, very specifically, what life coaching and individual therapy with a coach-trained clinician are designed for. Our coaches at Growing Self are licensed therapists with specific training in coaching psychology. They use frameworks like MIST, like CBT, like the Internal Family Systems framework I have written about elsewhere on the site, and they help you do the work in the moments of your real life.

If something in this article landed somewhere specific, that is the signal to talk to someone. We do free first conversations for exactly this. No commitment. No pressure. Just a real conversation about what is actually going on for you and whether what we do here might help.

The Old Story Underneath, and the Voice Waiting Beneath It

Once you can name your rumination code, the next layer becomes visible: the old story underneath. Donna’s most powerful reframe, in my opinion, is that rumination is a signal fire from your past. It is not random. It is not a character flaw. It is a part of you trying to get your attention about something that needs attention.

The “old story” you name in the M step of MIST is rarely brand new. The trust issue that drives my work-related rumination did not start last week. The “my voice does not matter” loop that drives someone else’s rumination did not start at their last performance review. These are patterns that get laid down early, often before we have the cognitive capacity to choose whether to take them on.

The research on this is well established. The Adverse Childhood Experiences study, run by Felitti and colleagues at Kaiser Permanente in the late 1990s, showed that early environmental adversity (which includes everything from overt trauma to chronic criticism, parental divorce, or growing up with a frequently absent caregiver) shapes adult emotional and physiological patterns in measurable ways (Felitti et al., 1998). More recent neuroscience research on the default mode network has linked these early patterns to specific neural signatures of self-referential processing in adulthood (Sheline et al., 2009).

Not every ruminator has a clear childhood trauma. Some of us were raised with steady, loving parents and still ended up with patterns. Adult adversity counts too: workplace inequity, persistent social marginalization, the cumulative weight of being a woman in a culture that asks women to absorb more emotional and relational labor. All of it can train the nervous system to ruminate. The point is not to find a villain. The point is to recognize that the loop you are running is carrying information.

Donna told me that the work, ultimately, is to reach the voice that was there before the loop got built. She put it in a way I have not been able to forget: rumination robs you of your true voice, your true wisdom, and your true knowing. Underneath every ruminative pattern is a person who already knows what to do, who already knows what is true, and who is being kept quiet by the noise of the loop. The work is to set down the inherited beliefs that are not yours to carry anymore, and to start trusting what is underneath. Part of that work is learning to silence your inner critic, which is often the loudest voice in the loop and the hardest one to recognize as not actually you.

This is the territory where the work goes deeper than the framework. It is also where the most lasting change happens. If you have made it this far in the article, you are already doing the meta-work, the noticing of your own noticing. The next step, if you want it, is having someone help you trust what your real voice has been trying to say. Our team does this every day. We would be honored to be part of your next chapter.

xoxo,
Dr. Lisa Marie Bobby

P.S. If something in this article hit somewhere specific, do not let it slip away by tomorrow. The What’s Holding You Back? Quiz is two minutes and gives you a clear next step. The free consultation is also right there if you are ready to talk to a real person about what you read.