If you could offer your past self one bit of advice...

[Substitutiarylocomotion]

That was not do to with romance/relationships...what would it be?

Follow your passion for animals and never work in any other environment.

If things are not going well or how you'd envisaged, don't panic, it will pass. A moment in time is not your whole life, things will change.

This! ^

You are right to be proud that she follows her heart and not the herd; but she's only 10. By the time she's a teen it will affect her mental health really badly and she won't be able to even try to fit in. Open your eyes. She's autistic. See her.
Once she has a diagnosis she can cut herself some slack and she'll get better.

Don’t become a teacher

Don't care about what people think of you.

Stop trying to prove you can do what others do.

This is a bit superficial but - buy the clothes/shoes/bags

You might as well go to uni and train to be a teacher like you want to, you'll be a HLTA by your mid 30s and having the teacher qualification will give you more opportunities. The reason you choose not to fucks off and marries your best friend anyway

Keep up the gym habit.
Keep control of your own money
Save, save, save!

Don’t take yourself too seriously

You're not fat!

Which bit?

Do not go up that ladder

Do some study for your A levels rather than expecting them to be handed to you on a plate.

Dont get involved with R. He’ll break your heart and shag your flatmate.

Go for that job on the other side of the world. You’ll kick yourself for ever if you don’t.

You are enough. Like yourself more.

Enjoy your own company early in life and don't be ashamed of doing things alone because that is super empowering.

Buy somewhere of your own. Your own security is so so important

That really saddens me.

Put. The. Fork. Down

Just because you've always been able to eat what you want and stay slim, that might not be the case after 40 so adjust your intake accordingly.

It’s really true though. I was bright, had a good degree from a good uni. I could have done lots of things.

Can I rephrase that, you are bright, have a good degree from a good uni. You can do a lot of good things.

Just chill the fuck out. You're a maniac. Calm down.

Have a lot more sex.

Be kind to yourself. Get a back bone..

Pay into a private pension as soon as you start earning.

Don't fall into the mindset that the mother should be primary caregiver and the father will support this. Even if he's earning well and wants this.

Always stay in work, even if it's part time. And pay the nursery bill from JOINT funds. The children are as much his as yours.

You never know what life will throw at you later.