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? 
Plan ahead dude!
The Rollercoasters and thrill rides aren't as scary as you thought they were.
Just lock your heart up and throw away the key, you will never get to be with anyone your heart wants, don't bother just don't even consider having a crush on anyone or falling in love with anyone, you are too flawed, you suck as a human being and you are destined to be alone forever.
I love you!
you do you
DONT TRUST ANYBODY
Don
Dont think about it, be about
(Meaning: Don't get in your own way)
Dont think about it, be about it!
(Meaning: Don't get in your own way)
Friends forever is a ginormous lie.
You screw up even once, the forever part is immediately and permanently revoked :(
Don't grow up too fast. You have plenty of time.