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Why a busy mind ruins your sleep

You’re lying in bed, the lights are off and your body is tired, but your mind feels differently about that.

Thoughts keep coming. Things you still need to do, conversations you replay in your head, small annoyances from the day that suddenly feel bigger than they really are.

You want to sleep, but your mind seems to really get going right then, and the more you try to “just stop thinking”, the less it works.

What happens when your mind is full

During the day you’re constantly busy. You process stimuli, make choices, respond to people, and switch constantly between tasks.

There’s actually very little room to truly wrap things up.

As a result, thoughts slowly pile up throughout the day, without you really processing them. And only when you get into bed and everything goes quiet does your brain finally get the space for it.

The result is that your mind starts clearing things out at exactly that moment.

Not because it wants to work against you, but because it’s trying to do its job. In the book Focus ON/OFF, Mark Tigchelaar also explains this: your brain needs moments to process information, and if those are missing during the day, it often happens in the evening or at night.

Why this disrupts your sleep so much

It doesn’t stop at thinking alone.

When your mind is active, your body stays active too.

Your heart rate is just a little higher than necessary. Your breathing becomes a bit more restless. Your nervous system stays in a mild state of “being on.”

And sleeping only works when that system can relax.

That’s why you can sometimes be exhausted, but still not fall asleep. Your body hasn’t yet received the signal that it’s safe to let go.

Why it comes back at night

Even if you eventually fall asleep, that full mind can come back later in the night.

Often somewhere between 02:00 and 04:00, when your sleep gets lighter and your brain is more active.

Thoughts that seemed small during the day can suddenly feel heavier at that moment. Not because they’ve changed, but because you’re lying there with them in the middle of the night, without distractions.

You wake up, your mind switches on, and before you know it you’re thinking again...

One simple action that really helps

What often makes the difference here is not trying to think less in bed, but clearing your mind earlier in the evening.

A simple way to do that is to write down everything on your mind before you go to sleep.

Grab a notebook and write down, without filtering, what’s on your mind. Things you still need to do, things that are on your mind, small frustrations, stray thoughts.

It doesn’t have to be pretty, structured, or even complete.

The goal is simple: make space in your mind.

By writing it down, you give your brain the signal that it no longer needs to hold on to anything. That alone often brings more calm.

What I always do myself

For me, the best thing is to make a small ritual out of this at the end of the day.

From Monday through Saturday, I briefly write down how my day was. If something unpleasant happened, I add that too, just so I don’t carry it into the night.

After that, I always end with three things I’m grateful for. They can be very simple things, but that’s exactly what helps me end the day on a good note.

And on Sunday I take a little more time to look back on the week. What went well, what could be better, and what do I want to do differently next week.

The nice thing is that your mind no longer has to remember or solve everything by itself once you’re in bed.

Try this this week :)

Better 1% Every Night.
Guy - Snoozeless

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