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? 
Dont take shortcuts
1. you were right
2. leave them
3. believe in yourself
4. they used you
Cry more
Careless
Happy-go-lucky
Talkative
just say no
Don't be careless
You are so loved. Don't doubt yourself. Believe in yourself. You are worth it all and deserve so much more.
you arent a burden
family is not always blood related
accept your skin and ethnicity, its damn beautiful
enjoy your rights while you have them
don't worry, you make it past 16
Don't wait. You are great as you are, you have nothing to fear. People will like you and people will love you.
Just give up now. Learn how to stuff your issues away and never let them out. You will never get the answers you seek so don't bother seeking them . stay the path of "faking" your emotions and you will be able to continue the struggle one day at a time. The battle never ends so don't think that it does.