“Most of us have the ability to be far happier and more fulfilled as individuals than we realize. Often, we don’t claim that happiness because we believe someone else’s behavior is preventing us from doing so. We ignore our obligation to develop ourselves while we scheme and maneuver and manipulate to change someone else, and we become angry and discouraged and depressed when our efforts fail. Trying to change someone else is frustrating and depressing, but exercising the power we have to effect change in our own life is exhilarating.”