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? 
You are enough.
Don't fall in love with Caleb.
Don't get involved
Let it all out..... Commend yourself and you made it another day
Don't go to college (yet)!
Rephrased to be more positive: Don't make important life decisions based on what everyone says you should be doing. If you're not ready for something, admit it, and walk away. You can always return.
@wittyAcres678
Missed the "three words" part. In that case:
Don't attend college.
you do matter
1-Be grateful for what you have as you will lose it all soon!
2- Dont worry, No matter how dark it seems, it will get better!!
3- Do your best!! And dont let them affect you!
4- its okay to be different!
Those are definitely things would have helped me a lot and changed my life! But at least i know that now :)
Save your money, plastic surgery works wonders.
Trust no one..
Stay strong