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? 
Don't rush. Take your time
Your worth everything.
Dont do it.
Try harder kid
Don't fall in love so easily. Don't just settle for people who are interested in you. Be picky and dumb the liars and cheats from the beginning. Wait to get married. Be who you want to be and love yourself before you start to love someone else.
Just skip that phase of trying to fit in, it doesn't work out, be proud of who you are. Also yes you really are trans and no you don't have a crush on any of those people you're aro af. Start singing asap, you're a soprano, deal with it, but for the love of god don't wait too long and don't be that scared of mistakes they're ok. You'll be ok.
Look for others
Don't get married.
Please start now
Don't be scared