Three things I want to remind you...
1- You are not your past. You are not your mistakes, not your embarrassing moments, not the things that have been done to you and not the things you've done.
2- You were created on purpose, for a purpose. A dream was very carefully tucked into your heart by the one who knows your heart best. It's not silly and it's not too big. Chase that dream!
3- Despite what anyone has ever said to you and despite what you have said to yourself: you are lovable, you matter, and you are enough.