Stop arguing with your Mum, you may not thank her now but in the long run she knows best and is only looking out for you,take the time to tell her how your feeling rather than shouting at her. Don't beat yourself up over it though as you will become a lot closer and call her a good friend in the years to come and will come to agree with most things she said even if u didn't at the time.
Stop being so eager to please other people and don't let the slightest thing upset you. The people who truely love and care for you will still be around in the years to come so don't worry and just be yourself and have fun
Don't put so much trust into that one person, he is only gonna break your heart and shatter all that trust, just take it slow and stop upsetting yourself when he doesnt text you back or speaks to you like crap! Trust me he aint worth it, you will find someone so much better than him.
Stop playing Mum and Dad off against each other just because they are divorced, they can see what you are doing and it not helping matters, you know mum and dad love you and you have no need to do this! As much as you are hurting now you will come to learn that they are better offf as best friends to each other than Husband and Wife
Dont go on holiday with him, it will only end in tears and your worst fears about him will come true and leaveu heartbroken, do NOT do it to yourself just do not go.
Just because you had the ultimate betrayel by him and your so called best friend, don't hold it against other people and let that stop you from trusting them. Not every bloke is a cheating two faced rat but unless you put your barriers down you won't find that out, go on you can do it! Just wait a few years and Mr.Perfect will walk into your life
Seriously the 500 layers of foundation is NOT a good look!! STOP it!! lol
Dont be too sad when friends move away and you lose touch because in a few years time you will be back in touch and closer than ever
So there are my main things looking back to my teenage years i would say to my youngerself. It a hell of a lot easier saying those things when you are older and looking back,I am kind of thankful i had that experience with my ex though as it taught me never ever to put up with any shit or crap of anyone so for that i do thank him! :)
Also my first blog giveaway is still open so feel free to enter it here