I try to look on the bright side of things when troubled. Dwelling on it only makes matters worse and does nothing to solve the problem. A wise man once told me, "Don't worry about it. In a hundred years from now who will know?" It has helped me a great deal to think this way.
How we react to problems makes a big difference in the outcome. Focus on the bigger issues and don't sweat the small stuff so we have more time for us and those we care about.