Last Tuesday, I spent 45 minutes staring at an email I’d already written. Was the tone too harsh? Too soft? Would my boss think I was incompetent? I rewrote the subject line seven times. By the time I hit send, I was exhausted. That’s overthinking. And if you’re here, you know exactly what I mean. Here’s the truth: you are not alone. This is normal. But what causes overthinking to spiral like that? Let’s unpack it.
Why Do We Get Stuck in Overthinking Spirals?
Overthinking is when you dwell on the same worry or scenario repeatedly, to the point it disrupts your life. Therapists often call it rumination. Usually it falls into two buckets: regretting the past and fearing the future. The problem? It’s rarely productive. You might spend hours going in circles, miss a deadline, or lose sleep, and still no decision gets made.
So what actually flips the switch? For many of us, it’s an unconscious attempt to control anxiety. The brain tries to map every possible outcome to feel safer. But as neuropsychologist Sanam Hafeez has pointed out, the mind almost always comes up with another “what if,” so you stay stuck. Perfectionism pours fuel on the fire. If you’re terrified of failing, even a tiny choice can trigger an endless review session. Shame, too, can glue you to replaying a mistake, hoping you’ll rewrite the past. And sometimes you just get trapped in indecisiveness—weighing the pros and cons for so long that forward motion becomes impossible.
I’ve noticed my own overthinking often fires up when I can’t predict someone else’s reaction. Did I offend my friend with that text? Should I apologize? Will they think I’m needy? The questions multiply, and suddenly I’m scrolling through old messages for clues. Sound familiar? The good news is once you understand what causes overthinking in your life, you can interrupt the pattern.
How to Stop Overthinking: The 5-Step Pivot Plan
You can break the cycle. Here’s a mix of what therapists suggest and what’s worked for me in real life.
- Name the Thought.
When you catch yourself spinning, say out loud, “This is overthinking.” It sounds almost too simple, but naming creates a breath of distance. Whisper it: “Ah, there’s the loop again.” You’re no longer inside the thought; you’re observing it. - Challenge the Story Your Mind Is Telling You.
Ask: Is this worry helping or hurting? Where’s the actual evidence? Most of our what-ifs are built on feelings, not facts. You might believe your boss is angry about a tiny mistake, but has she said anything? Probably not. If you can’t find the truth alone, run it by a trusted friend—but avoid co-rumination, which is when two people just keep rehashing the same problem and intensify the anxiety. A good friend will gently help you fact-check, not join the panic. - Move Your Body, Even for 5 Minutes.
Physical movement can short-circuit a mental loop. Therapist Jessica Foley notes that a quick walk around the block releases endorphins, which can calm your brain almost immediately. When I catch myself stuck on a worry, I sometimes do 20 jumping jacks. It feels ridiculous, but it works. Movement nudges your nervous system out of its frozen state. - Try Box Breathing.
Overthinking often brings shallow, tight breathing. Box breathing is a deep breathing technique that calms you fast: inhale for 4 seconds, hold for 4, exhale for 4, hold for 4. Repeat a few times. I use this right before scary conversations. It gives my body a clear signal: “You are safe right now.” Mindfulness meditation is another powerful tool. Simply notice the sounds around you, the feel of your feet on the floor, to anchor yourself in the present moment. - Schedule a Worry Session.
It sounds odd, but give your overthinking a set time. When a nagging thought pops up at 10 AM, jot it down and tell yourself, “I’ll worry about this at 4 PM.” Then use a healthy distraction—a podcast, a chapter of a book, a quick chat with a friend. At 4 PM, set a timer for 10 minutes and worry on purpose. Afterward, close the notebook. This contains the chaos and teaches your brain that it doesn’t need to be on high alert all day.
The 5-Minute Shutdown Ritual
I call this the Shutdown Ritual. When you feel the mental hamster wheel speeding up, grab a notebook and a timer. Set the timer for exactly 5 minutes. Write down every single worry that’s buzzing around, no matter how small: “I’m afraid I’ll bomb the presentation.” “I’m scared my partner is quietly upset.” Let the words pour out. No editing, no solving.
When the timer beeps, close the notebook firmly. Say out loud, if you can, “I’ve given this enough attention for now.” This tiny declaration signals your brain that the session is over. It’s not about magically fixing the worry. It’s about acknowledging the loop and then choosing to step out of it. The physical act of closing the notebook creates a boundary that my mind actually respects. I’ve used this ritual dozens of times, and it almost always lowers the volume in my head enough that I can get on with my day.
FAQs About What Causes Overthinking
Q: What causes overthinking in the middle of the night?
A: At night, distractions disappear, and unprocessed stress rushes in. Your brain tries to “solve” problems while you should be sleeping. Try the Shutdown Ritual before bed or practice box breathing in the dark to signal safety.
Q: Is overthinking a sign that I have anxiety or depression?
A: Overthinking itself isn’t a disorder, but it’s often a symptom of anxiety, depression, or past trauma. If your overthinking is constant and disrupts your ability to function, speaking with a professional can help uncover the deeper “what causes overthinking” for you personally.
Q: Can overthinking cause physical symptoms like headaches or stomach issues?
A: Yes, absolutely. Chronically living in a state of mental spin puts your body on high alert, which can lead to fatigue, headaches, sleep trouble, and digestive distress. Addressing what causes overthinking through relaxation and movement can bring physical relief too.
Q: How do I know if I’m overthinking or just being careful?
A: Being careful leads to a decision or an action. Overthinking leads to paralysis and more questions. If you’ve already examined a problem ten times and you’re no closer to a resolution—and actually feel more stuck—you’re overthinking. That’s the red flag.
One Last Thing
That email I panicked over? My boss replied: “Looks good, thanks.” Two words. Forty-five minutes of agony for absolutely nothing. Next time you catch yourself asking “what causes overthinking,” remember that your mind is just trying to
