Perfectionism causes much unhappiness in relationships. Perfectionism is a wonderful trait for surgeons in the operating room or for concert pianists, but for married couples is usually problematic. The perfectionist knows that his or her way is not only the best way to be or do, but also the ONLY way. Imposing these standards on the other makes the other very unhappy and is the source of many arguments and outright verbal fights. Perfectionism can be toned down but never eliminated.