Without living, there will be no learning. Without learning, there will be no growth. Without growth, there will be no change. The only way you learn is by trying. You may make mistakes but you have to remember that doing so will lead to change. Be willing to learn from experiences, grow and live to become better not bitter.
Well, I always know what I want. And when you know what you want-you go toward it. Sometimes you go very fast, and sometimes only an inch a year. Perhaps you feel happier when you go fast. I don't know. I've forgotten the difference long ago, because it really doesn't matter, so long as you move.