But there's only one you. Nobody will ever be like you. You have a talent, a uniqueness, a beauty, like nobody else. That makes you about as valuable as anything there is. The only thing that will really keep you from doing the amazing things that you dream of is yourself - how you view and value yourself.
People do amazing things simply because they think they can.
If Michael Jordan had told himself he would never be a basketball player, he wouldn't have been. Big things happen because someone thinks they can. You want to be an athlete, but you smoke You want to be a teacher, but your friends tell you that's stupid Picture yourself where you want to be, doing what you want to do. And when there seem to be barriers, Zap them. In other words - find a way to get over them so that you can do what you want to do.