If you know exactly what you want to be, you need to spend as much time as possible with people who are actually that already.
Do you believe in God? Perhaps you aren't old enough. The reason old people believe in God is because they've given up believing in anything else, and one can't exist without faith in something. . . . God is a sort of burglar. As a young man you knock him down; as an old man, you try to conciliate him because he may knock you down. Moral: don't grow old.