The cheesy self-help gurus and self-proclaimed masters of success always repeat the same phrase, "Don't quit. Don't ever quit." Even though it's gotten to be a cliche and is often expressed in a sunshine-and-unicorns way, it is true. Success is hard.  The world doesn't owe you anything.  You are going to have to fight like hell for every inch of progress. Above all, you have to learn how to finish. You must quit quitting.