Does “positive thinking” actually work?  Or, is it one of those pithy approaches to life, where the “throwaway” line is used to dismiss unpleasantries and negative influences that might otherwise disprove the obvious — that life is difficult enough without listening to the difficulties of others?  Then, there is the “problem perspective” — of seeing everything as a problem as opposed to a solution or opportunity, and to see the world as a glass half-empty in contradistinction to a half-full universe. […]