You can't connect the dots looking forward; you can only connect them looking backwards. So you have to trust that the dots will somehow connect in your future. You have to trust in something - your gut, destiny, life, karma, whatever. This approach has never let me down, and it has made all the difference in my life.
Commitment is a big part of what I am and what I believe. How committed are you to winning? How committed are you to being a good friend? To being trustworthy? To being successful? How committed are you to being a good father, a good teammate, a good role model? There's that moment every morning when you look in the mirror: Are you committed, or are you not?