Stability of Happiness

The right to "pursue happiness" is one of the dominant themes of western culture, and understanding the causes of happiness is one of the primary goals of the positive psychology movement. However, before the causality question can even be considered, a more basic question must be addressed: CAN happiness change? Reasons for skepticism include the notion of a "genetic set point" for happiness, i.e. a stable personal baseline of happiness to which individuals will always return, no matter how muc