Your brain right now is under renovation

You forget things you absolutely meant to do. Your feelings go from zero to a hundred over something small. You know a thing is a bad idea and do it anyway. You're wide awake at midnight and useless at 8am. You might have heard adults joke about the "teenage brain" like it's something broken.

It isn't broken. It's being renovated. And renovations are messy, but they're also how you end up with something better.

What's actually changing

The brain doesn't finish developing all at once. During your teens, some parts are working at full volume, and others are still being built.

The parts that deal with emotions, rewards and social stuff, like wanting to fit in and feeling things strongly, are extra active right now. The prefrontal cortex, the part behind your forehead that handles planning, thinking ahead, controlling impulses and weighing up consequences, is still being developed. It keeps developing into your mid-twenties.

So if it feels like your feelings are sometimes driving the car and your planning brain is in the back seat, that's roughly what's going on.

Why this is actually a strength

That extra-strong reward and emotion system isn't a mistake. It's what makes teenagers brave enough to try new things, meet new people, take on challenges and start building a life separate from their family. Your brain is also especially good at learning right now. Skills you practise in your teens, like music, sport, languages, making things, can really stick.

This is also when you start working out who you are: what you care about, what's unfair, what you want. Strong feelings help with that.

Why it can be hard

The downside is that the brakes aren't fully fitted yet. That can mean:

• Acting on impulse and regretting it.
• Feeling emotions really intensely, and fast.
• Finding it hard to keep track of lots of things at once.
• Being more influenced by friends, especially in the moment.

None of that makes you a bad person. It just means some things take a bit more effort right now.

Your sleep clock shifts too

During puberty, your body starts releasing the sleepy hormone melatonin later at night. That's why you might genuinely not feel tired until 11 or later. Early school starts then leave a lot of teens short on sleep, which makes everything else, mood, memory, focus, harder. There's a separate article on sleep if you want to know more.

Working with your brain

• Write things down. Lists, reminders, calendars. Not because you're forgetful but because your planning brain is still under construction.
• Pause before big decisions. Even ten seconds can let the thinking part catch up.
• Notice your triggers. Tired, hungry, stressed? That's when feelings run hottest.
• Protect your sleep where you can. It helps every part of this.
• Be kind to yourself. You're not failing at being an adult. You're becoming one, and that's supposed to take a while.