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Why Can’t I Stop Overthinking? What’s Actually Going On

  • Writer: Hannah McCann, MSW, LADC I, LCSW
    Hannah McCann, MSW, LADC I, LCSW
  • Mar 31
  • 4 min read
visual of a continuous loop with chaotic lines illustrating overthinking and mental rumination
The kind of thinking that keeps going, without actually getting you anywhere.

Why Can’t I Stop Overthinking? What’s Causing It

A lot of people end up searching things like “why can’t I stop overthinking” when their thoughts start to feel constant or hard to control.


Overthinking is not just thinking more than usual. It is a pattern where your mind keeps returning to the same situation, trying to understand it, predict it, or figure out what to do next. Even when you recognize it’s happening, it can feel like your brain keeps going anyway.

This is especially common when something feels uncertain, emotionally important, or unresolved. Your mind is trying to solve something that does not have a clear answer, which is why the thinking continues.


What Overthinking Actually Looks Like in Real Life

Overthinking doesn’t always look dramatic. Most of the time, it shows up in everyday situations.


It can look like replaying a conversation hours later and wondering if you said the wrong thing. It can look like going back and forth on a decision you’ve already thought through multiple times. It can also show up as trying to predict how something will go before it even happens.


For some people, it’s more constant than that. It can feel like a background loop that never fully shuts off.


There are also times when it overlaps with a more general sense of feeling off or disconnected even when everything seems fine on the surface.


The Thought Loop Behind Overthinking

From a clinical perspective, overthinking often follows a predictable loop:


  1. Trigger – something feels uncertain, uncomfortable, or important

  2. Initial thought – your brain tries to make sense of it

  3. Analysis – you replay, question, and consider different possibilities

  4. No resolution – there is no clear answer

  5. More thinking – your brain keeps going, trying to “figure it out”


Over time, this loop becomes automatic.


Instead of helping you solve the problem, it keeps you mentally stuck in it.


For some people, this kind of looping overlaps with other patterns that keep repeating over time, even when they don’t feel helpful anymore.


Why Your Brain Keeps Doing This

Overthinking is not random. It usually serves a function.


Most often, it is your brain trying to:

  • reduce uncertainty

  • prevent mistakes

  • stay in control

  • or prepare for something uncomfortable


In the moment, it can feel productive. It can feel like you are doing something about the situation.


The problem is that when there is no clear solution, the thinking becomes repetitive instead of helpful.


When Overthinking Starts Affecting You

Over time, overthinking tends to impact more than just your thoughts.


You might notice:

  • difficulty making decisions

  • trouble falling asleep or shutting your mind off

  • increased anxiety or tension

  • feeling mentally drained

  • being less present in conversations or daily life


This is often where it connects more closely with anxiety and emotional overwhelm.


What Actually Helps (Clinically + Practically)

Trying to force yourself to stop thinking usually doesn’t work.


What tends to help more is changing how you respond to the thoughts rather than trying to eliminate them.


Here are a few approaches that are actually useful:


1. Recognizing When Thinking Becomes Repetitive

There is a difference between thinking something through once and going over it repeatedly without gaining anything new.


A simple question to ask yourself is:

“Am I getting new information right now, or repeating the same thought?”

That awareness alone can help interrupt the loop.


2. Externalizing the Thought

When thoughts stay in your head, they tend to loop.


Getting them out can help:

  • writing them down

  • saying them out loud

  • or organizing them in a more concrete way


This often creates more clarity than continuing to think internally.


3. Setting Limits on Thinking Time

Instead of trying to stop completely, it can help to contain it.


For example:

  • “I’ll think about this for 10 minutes, then I’m going to shift my attention”


This works because you are not fighting the thought, you are giving it structure.


4. Learning to Tolerate Uncertainty

This is one of the biggest shifts.


A lot of overthinking comes from trying to reach certainty in situations where certainty doesn’t exist.


Part of reducing overthinking is learning to sit with some level of “not knowing” without needing to resolve it immediately.


5. Shifting Attention Back to the Present

Overthinking pulls you into the past or future.


Grounding yourself in the present moment can help interrupt that cycle.


This can look like:

  • focusing on what you are doing right now

  • bringing attention to your surroundings

  • or using simple grounding techniques


Approaches like CBT and ACT often focus on changing your relationship with thoughts rather than trying to eliminate them.


Why It’s Hard to Do This Alone

A lot of people who struggle with overthinking are used to trying to figure things out on their own.


They analyze, reflect, and try to make sense of things internally. That can make it harder to recognize when thinking has shifted from helpful to repetitive.


It’s also common to feel unsure about how to even start talking about it, especially if it feels scattered or hard to explain.


If This Feels Familiar

If your thoughts have been feeling constant, repetitive, or harder to manage than they used to be, that’s usually a sign that something underneath is asking for attention.


This is often the kind of pattern people start to work through when they begin looking more closely at how their thoughts, emotions, and behaviors are connected.


And if this is something you’ve been noticing more lately, it might help to have a space where you can slow things down and make sense of it without trying to solve it all in your head.

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