The difference between a successful person and others is not a lack of strength, not a lack of knowledge, but rather a lack in will. When one door of happiness closes, another opens, but often we look so long at the closed door that we do not see the one that has been opened for us. Why do people often grudge about their look and life, why don't they realize how bless they are to have a roof to stay in, food to eat rather then complaining how bad their life is. Comparing with those poor, we're way much better. Life's unpredictable.