Life is complex and messy. It can be extremely difficult to get traction, let alone find motivation. But motivation is something you can learn to create at will. Becoming deeply passionate is also within your creative control. As a result, you can completely predict your own success.
True practice and learning force you to deeply examine the chinks in your armor. You are only as strong as your weakest link. In a world that tells you to ignore your weaknesses, true practitioners do the opposite.
Self-reliance is all that it sounds like plus considerably more. If not introduced to the world by Ralph Waldo Emerson, it was definitely brought to much popular public awareness by his 1841 essay Self-Reliance. In positive psychology, self-reliance has strong theoretical significance thanks to its implications for happiness.
He that is good for making excuses is seldom good for anything else. - Benjamin Franklin Do you ever catch yourself making excuses when things don't entirely go your way? Have you ever neglected taking responsibility for the events and circumstances of your life?