Let’s face it. We all understand what anger is, and we've all experienced it: whether as a fleeting annoyance or as full-fledged rage. Anger is a totally normal, commonly healthy, human emotion. But when it gets out of control and turns destructive, it may lead to troubles—troubles at work, in your personal relationships, and in the total quality of your life. And it may make you feel as if you're at the mercy of an unpredictable and mighty emotion.