Overthinking and Rumination: Why Your Brain Gets Stuck and How Hypnotherapy Can Help
"I can't turn my brain off."
"I replay conversations for days."
"I'm exhausted from analysing everything."
If any of that sounds familiar, you're in good company. Overthinking — or what psychologists call rumination — is one of the most common things people bring to me. It's also one of the most draining, precisely because the effort of trying to think your way out of it tends to make it worse.
What's Actually Happening in Your Brain
Overthinking isn't a character flaw or a sign of weakness. It's a brain pattern — and understanding that can take some of the shame out of it.
When we ruminate, we tend to get stuck in what neuroscientists call the Default Mode Network (DMN) — a set of brain regions that activate when we're not focused on the outside world and the mind turns inward. In healthy functioning, the DMN quietens when we engage with a task or the present moment. In chronic overthinkers, it can dominate, keeping the mind looping through the same thoughts, worries, and replays without resolution (Hamilton et al., 2015).
There's also typically poor connectivity between the emotional processing parts of the brain and the rational, regulatory areas — which means feelings drive the thought spiral without the steadying influence of perspective. And the more we use these neural pathways, the more entrenched they become. The brain quite literally gets better at the thing it keeps practising, including rumination.
None of this is your fault. But it does mean that willpower alone — telling yourself to just stop — rarely works, because you're trying to override a deeply grooved pattern using the very system that's caught in it.
What It Can Look Like
Overthinking tends to show up differently for different people. For some it's replaying past conversations, picking over what was said and what it might have meant. For others it's future-focused — running through worst-case scenarios, planning for every possible outcome, unable to make a decision without exhausting every angle. Sometimes it's both.
Common signs include difficulty getting to sleep because thoughts won't settle, mental exhaustion that doesn't lift with rest, a harsh inner critic that commentary-tracks everything you do, and a sense of being physically present but mentally miles away.
It often overlaps with anxiety — and the two tend to feed each other. Anxiety generates more to overthink; overthinking generates more anxiety.
Why Hypnotherapy Helps
The reason overthinking is so resistant to rational approaches is that it doesn't live in the rational mind. You can know perfectly well that a conversation you're replaying happened three weeks ago and there's nothing you can do about it — and still be replaying it at 2am. The knowledge doesn't touch the pattern.
Hypnotherapy works because it operates where the pattern actually lives. In a state of relaxed, focused attention, the brain shifts away from the DMN's self-referential loop and becomes genuinely more open to new ways of thinking and responding. Research on brain activity during hypnosis shows reduced DMN activity and changes in the way attention and emotional processing networks communicate — which is precisely what the overthinking brain needs (Cooney et al., 2010).
In practice, the work might include:
Interrupting the pattern. Through hypnotic suggestion, we can establish internal "circuit breakers" — ways of noticing when the loop is starting and redirecting before it gains momentum. With practice, this becomes increasingly automatic.
Reframing the role of the overthinking mind. Often the part of us that ruminates started out trying to keep us safe — anticipating problems, rehearsing difficult conversations, staying one step ahead. In hypnotherapy we can acknowledge that intention while gently negotiating a less exhausting way of operating.
Building a future template. Creating a vivid, detailed experience — under hypnosis — of what it feels like to think more freely, to let things go, to move through the day without the mental weight. The brain responds to this kind of rehearsal in ways that begin to make the experience more accessible in real life.
Self-hypnosis. Something I teach all my clients, so you have a tool to use independently — particularly useful for the racing-mind-at-bedtime problem that so many overthinkers know well.
What You Can Do Between Sessions
A few things that genuinely help alongside the hypnotherapy work:
Move your body. Physical activity shifts brain activity and breaks rumination cycles more effectively than most mental strategies. It doesn't need to be intense — a walk works.
Write it down. Getting thoughts out of your head and onto paper signals to the brain that it can release them. A brain dump before bed — not journalling in the elaborate sense, just emptying whatever's circling — can make a real difference to sleep.
Set a worry window. It sounds odd, but giving yourself a specific time to think about the things you're worried about — and gently postponing them outside that window — can help the brain learn that it doesn't need to hold onto everything all the time.
Notice without engaging. Mindfulness practice, even just a few minutes a day, builds the capacity to observe thoughts rather than be pulled into them. You don't have to stop the thoughts — just practise not following every one.
A Note on ADHD
If you've always been this way — if the overthinking and mental noise have been a constant rather than something that developed — it's worth considering whether ADHD might be part of the picture. Racing, hard-to-direct thoughts are a very common feature of ADHD that often goes unrecognised, particularly in adults. I work with a lot of neurodivergent clients and the approach in those cases looks somewhat different.
Overthinking can feel like it's just how your brain is wired — and to some extent it is. But the brain is also genuinely changeable. The same neuroplasticity that entrenched the pattern can be used to build a different one.
If you'd like to explore whether hypnotherapy might help, a free consultation call is a good place to start.
References
Cooney, R. E., Joormann, J., Eugène, F., Dennis, E. L., & Gotlib, I. H. (2010). Neural correlates of rumination in depression. Cognitive, Affective, & Behavioral Neuroscience, 10(4), 470–478.
Hamilton, J. P., Farmer, M., Fogelman, P., & Gotlib, I. H. (2015). Depressive rumination, the default-mode network, and the dark matter of clinical neuroscience. Biological Psychiatry, 78(4), 224–230.
