If you could write a note to your younger self, what would you say in only three words?
I had two thoughts. 1) Words can hurt. 2) Try your best.
What would your note say? 
Please be confident
Don't look back
Just be patient :)
Hold on tight!
Don't gain weight
Don't self harm
Dear, even now you are drowning in tears but believe me, that tears will turn into a bautifull rainbow. Go ahaed and cry, it will make you stronger!!
It gets worse
It gets better. In time you will meet someone who understands you. You will get past this cycle of psycho happy, and psycho sad. BUT STOP PROCRASTINATING ABOUT SEEING A PSYCHOLOGIST. They will give you tools to help yourself.
STOP worrying about what your horrible group of friends think. By the time your 20 you will realize they will never grow up. They are nasty people who tear others down to make themselves feel better.
And break your father's nose before you turn 15. When you finally fight back he realizes that you aren't a punching bag.
Just remember it gets better from here
@thoughtfulApple41 you seem like a really cool person
@Kronos thanks.