You are strong and tough. It doesn't matter who you are. You can be the smallest person in the world but still make a difference. People can change their clothes or attitudes but that will not change who they really are.
Nothing is impossible. If you believe in yourself you can do it. It doesn't matter if you have a completely different idea than your best friend, cause guess what? They will most likely have a different idea than you will. And that is okay because no one is perfect. You know impossible literally says IM POSSIBLE