Can you look yourself in the mirror saying that same exact line and honestly believe it? Be whole-heartedly honest with yourself. If your not, it will only hurt you.
If you can say those words and honestly believe in them, then good for you! All you need to do now is live who it is that you are, and follow what you believe in.
If you can't, don't be discouraged. It doesn't mean that your life will be wasted. It means that you need to take some serious time and thought into finding those answers. If you find those two answers, your determination and willingness to maintain the integrity of who you are and what you believe in will ultimately drive you to a life of greatness. Everybody in this world has an opportunity to be great. One's greatness has nothing to do with one's natural talent or ability; it has everything to do with your how far you are willing to go in order to be who you are and what you believe in. Period.
Learn from those who are have already tasted success.
Don't know where to start?
Will Smith, a man that was no different from you and I at one point in his life, figured out who he was and what he believed in, and he erupted in success.
Believe in yourself, and live your dreams.