Finding happiness when life is running smoothly is easy. Being happy when you're sad, or when life is treating you like excrement on the bottom of it's giant cosmic shoe, is an entirely different story. It also begs the question, why on earth would you want to be happy when you're sad? Aren't you just suppressing your emotions by pretending your life doesn't suck a million lemons right now? The answer, as you might expect, is not black and white. Happiness is an emotion, and like all …