It's 11:47 pm and you're lying in bed, eyes open, replaying a conversation from three days ago. You said something — maybe it came out wrong — and now your brain won't let it go. You've analysed it from every angle. You've imagined every possible way the other person could have taken it. You've drafted apologies in your head that you'll probably never send.
And you know it's irrational. You know you should just sleep. But knowing that doesn't stop it.
If this sounds familiar, you're not alone — and you're not broken. Overthinking is one of the most common things people bring into therapy. Understanding why it happens is the first step to actually changing it.
Your brain is trying to protect you.
Overthinking isn't a character flaw. It's your brain doing its job — just doing it too well.
The part of your brain that manages threat detection doesn't distinguish between a tiger in the jungle and an awkward email you sent your boss. It just knows something felt uncertain, and it wants to resolve that uncertainty before you get hurt.
So it keeps running the simulation. What if this happens? What if that happens? What if you'd said it differently? It's trying to find the version of events where you're safe. The problem is, that version doesn't exist — the future hasn't happened yet — so the loop never closes.
Smarter and more anxious people overthink more.
This is something I see all the time. The people who overthink the most are often the most thoughtful, empathetic, and perceptive. They notice more. They care more. They see consequences others miss.
If you're someone who thinks deeply, your brain has more material to work with — and more scenarios to run. That capacity is genuinely useful in a lot of situations. It becomes painful when it can't find the off switch.
The "what if" loop and why it keeps you up.
The "what if" loop is anxiety's favourite trick. It poses questions that feel urgent but have no real answer right now. And your brain, trying to be helpful, keeps attempting to answer them anyway.
This is why overthinking is exhausting but doesn't feel productive. Real problem-solving has a destination — you think, you reach a conclusion, you act, you move on. Overthinking just circles.
The key difference from genuine problem-solving: problem-solving moves forward, overthinking goes in circles. If you've been thinking about the same thing for hours and you're no closer to a decision or a feeling of resolution, that's overthinking.
Three things that actually help (honest ones).
1. Give the thought a job or a deadline. When a thought keeps looping, it often helps to say to it: "Okay. I'll deal with this at 9am tomorrow." Write it down. The act of writing gives your brain permission to let go — it no longer has to hold onto the thought to make sure you don't forget it. This sounds simple, but it actually interrupts the loop for a lot of people.
2. Notice the question underneath the thought. Most overthinking isn't really about the surface content — it's about a deeper need that isn't being met. "What if they're upset with me?" is often about a fear of not being liked, or not being good enough. When you name that fear directly, it becomes something you can actually work with instead of a thought you can only spin around.
3. Move your body before you try to calm your mind. When anxiety is running high, thinking more doesn't help — your nervous system is in a state where it processes threat, not nuance. A walk, a shower, even just moving to a different room can interrupt the physiological state that's feeding the loop. It's not about distraction. It's about resetting the system the thought is running on.
None of these are magic. But they work in a way that "just stop thinking about it" never will — because they work with how your brain actually operates, rather than against it.
If your overthinking is affecting your sleep, your relationships, or your ability to make decisions, it might be worth talking to someone. Anxiety is very treatable — but it rarely just goes away on its own.
Take the free anxiety screening — 3 minutes