Why Can’t I Stop Overthinking?

You replay the conversation.

Then replay it again.

You analyze what you said, what they meant, what you should have said—until your mind feels loud, restless, and completely drained.

Even when nothing is “wrong,” your brain keeps searching… scanning… solving.

And at some point, you’ve probably asked yourself:

“Why can’t I just stop thinking about this?”

If this feels familiar, you’re not alone—and more importantly, you’re not broken.

Overthinking isn’t a personality flaw. It’s a pattern your mind has learned, often rooted in anxiety, responsibility, and a desire to get things “right.”

The good news?
What’s learned can also be unlearned.

What Overthinking Actually Is (And Why It Feels So Hard to Stop)

Overthinking is often a form of what psychologists call repetitive negative thinking—a cycle of mental loops that include worry, rumination, and constant analysis.

It can look like:

• Replaying conversations long after they’ve ended

• Overanalyzing decisions before (and after) making them

• Imagining worst-case scenarios

• Trying to “figure out” feelings, situations, or outcomes

On the surface, it feels like you’re being productive—like you’re solving something.

But underneath, something else is happening:

👉 Your brain is trying to create certainty and safety

The Hidden Function of Overthinking

Overthinking doesn’t exist randomly.

It usually develops because at some point, your brain learned:

• “If I think this through enough, I won’t make a mistake.”

• “If I analyze everything, I can prevent something bad.”

• “If I understand it fully, I’ll feel better.”

In other words:

👉 Overthinking is your mind’s attempt to protect you

The problem is… it doesn’t actually work.

Instead of creating clarity, it creates:

• Mental exhaustion

• Anxiety

• Indecision

• Self-doubt

And the more you try to think your way out of it, the more stuck you feel.

Why Overthinking Feeds Anxiety (Not Relief)

Here’s the paradox:

The more you engage with overthinking, the stronger it becomes.

Research shows that rumination and worry are key drivers of anxiety and depression, and are maintained by repetitive thinking patterns rather than resolved by them .

In fact, a 2024 randomized controlled trial found that targeting rumination through cognitive behavioral approaches can significantly reduce anxiety symptoms—but only when the pattern itself is interrupted, not fed .

Another recent meta-analysis found that cognitive behavioral therapy (CBT) is effective in reducing repetitive negative thinking across anxiety-related conditions .

What this tells us is important:

👉 Overthinking isn’t solved by more thinking
👉 It’s solved by changing your relationship to your thoughts

The “High-Functioning” Trap

Many of the people I work with are thoughtful, capable, and high-functioning.

From the outside, they seem:

• organized

• responsible

• put together

But internally, they feel:

• mentally exhausted

• stuck in their head

• constantly “on”

This is where overthinking becomes especially tricky.

Because it’s often reinforced by success.

You might think:

• “This is just how I am”

• “It helps me stay on top of things”

• “I should be able to handle this”

But over time, the cost becomes clear:

👉 You’re doing well externally—but struggling internally

Why You Can’t “Just Stop”

If it were as simple as telling yourself to stop thinking, you would have already done it.

Overthinking persists because it operates on multiple levels:

1. Cognitive (Thought Patterns)

Your brain is used to analyzing, questioning, and predicting.

2. Emotional (Anxiety + Uncertainty)

You feel discomfort—and your mind tries to resolve it.

3. Nervous System (Body Activation)

Your body stays in a subtle state of alertness, making it harder to relax.

That’s why quick fixes like:

• “just distract yourself”

• “think positive”

• “stop worrying”

don’t last.

They don’t address the system as a whole.

How CBT Helps You Break the Overthinking Cycle

In my practice, I use Cognitive Behavioral Therapy (CBT) to help clients understand and interrupt overthinking patterns in a structured, practical way.

CBT works by helping you:

1. Identify Thought Patterns

You begin to recognize when your mind is looping rather than solving.

2. Challenge Unhelpful Beliefs

Not every thought needs to be believed—or analyzed.

3. Shift Your Response

Instead of engaging with every thought, you learn to step back and respond differently.

4. Build Tolerance for Uncertainty

One of the biggest drivers of overthinking is discomfort with “not knowing.”

CBT helps you build the capacity to sit with uncertainty without spiraling.

A Subtle but Powerful Shift

One of the most important shifts isn’t:

“How do I stop thinking?”

It’s:

“Do I need to engage with this thought?”

This creates space.

And in that space, something changes.

You’re no longer inside the loop—you’re observing it.

What Actually Helps (Without Overwhelming You)

Instead of trying to eliminate overthinking completely, the goal is to reduce its grip on you.

Here are a few grounded starting points:

1. Name the Pattern

Simply noticing:

“I’m overthinking right now”
can begin to interrupt the cycle.

2. Shift from “Solve” to “Allow”

Not every thought needs a solution.

Sometimes the most effective response is:

“This doesn’t need to be figured out right now.”

3. Bring Attention Back to the Present

Overthinking lives in the past and future.

Your body lives in the present.

Even simple grounding—like noticing your breath or surroundings—can help regulate your system.

4. Limit Mental Rehearsing

If you catch yourself replaying something repeatedly, gently redirect your attention instead of continuing the loop.

When It’s Time to Get Support

If overthinking is:

• constant

• exhausting

• interfering with your relationships or decisions

it may be time to get support.

Therapy isn’t about stopping your thoughts completely.

It’s about helping you:

• feel calmer in your mind

• trust your decisions

• stop feeling trapped in mental loops

You Don’t Have to Live in Your Head

Overthinking can make your world feel smaller.

More controlled. More cautious.

But also more exhausting.

With the right support, it’s possible to:

• experience more mental quiet

• feel more grounded in your body

• make decisions with clarity instead of fear

If this feels familiar…

You’re not alone—and you don’t have to keep managing this on your own.

If you’re looking for anxiety therapy in Los Angeles or support with overthinking, I offer a free 15-minute consultation to help you get started.

References

Mak, W. W. S., Tong, A. C. Y., Fu, A. C. M., et al. (2024). Efficacy of internet-based rumination-focused cognitive behavioral therapy and mindfulness-based intervention. Applied Psychology: Health and Well-Being, 16(2), 696–722.

Stenzel, K. L., Keller, J., Kirchner, L., & Rief, W. (2025). Efficacy of cognitive behavioral therapy in treating repetitive negative thinking. Psychological Medicine, 55(e31).

Watkins, E., et al. (2023). Managing rumination and worry: A randomized controlled trial. Behaviour Research and Therapy, 168, 104378.