I have seen a few of these posts pop up recently, so, inspired by Mummy Barrow, I thought I would give it a go! Here is my letter to myself, aged 16.
Dear S,
So, this is a bit odd. A letter from an older you. Only 14 years older I hasten to add!
Firstly, I want to tell you that you are doing the right thing. Staying at school would be a complete mistake and you would hate it. Leaving school is a big decision. You do manage to get work experience at Chelsea FC and from there you get a job in London and move to Notting Hill the week you turn 17! Being 18 is tough and you won't enjoy it much. Stick at it and try to think things through before you make silly mistakes.
You meet your husband in your first job and you know within a month of knowing him that he will end up being the man you marry! Don't give up chasing him, he will give in eventually! Maybe be a bit less obvious though, he already knows that you like him but he thinks you are a bit too young (you are only 17). You will go out for a month when you turn 18 and it won't work out. Don't fret about it, you will go away and grow up a bit. Six months later you will get back together and within three weeks you will be engaged! He's a wonderful man, husband and father and you are very lucky to have found him when you were so young.
I am sorry to tell you that you will not become a Blue Peter presenter. However, you will be working at the BBC in Sportsnews doing the work of an Assistant Producer by the age of 18. Not bad going, even if I do say so myself. You get to sneak into the Blue Peter studio at least once a week to watch filming (I know it's not the same but hey, it wasn't meant to be). BBC Television Centre is great. You will skip along the corridors and pinch yourself at how lucky you are to be there. Let me tell you now, you are not lucky, you deserve it and you work really hard.

By the age of 30 you have two children and have been married for nine years! You have a girl and a boy and you now know what tiredness is. Appreciate all the sleep that you get. Being a mum is tough. Listen to everyone who gives you advice before you have children. Listen less to everyone who gives you advice after you have children!
You'll laugh at this one, at 29 you start university full time studying philosophy, politics and economics. To be fair, if you'd told me that three years ago I wouldn't have believed it! I'm fairly certain you won't believe that one either, having been adamant since you were 7 that you wouldn't go to university. In fact, maybe if you could keep up on your maths skills then economics wouldn't be so hard in the future.
You are beautiful. You have an amazing body. Honestly, take that jumper off from around your waist. What I wouldn't give for that bum now! It really is tiny! Although maybe I shouldn't tell you this. You might be dangerous if you realise your full potential!
My message to you is to believe in yourself. Never give up trying to be the best that you can be. Don't let people walk all over you. Stand up for yourself because no one else is going to. But try not to be too bolshy - it will get you in trouble (repeatedly)!