Happiness alone is too thin a goal for a good life

Seligman explains why he moved away from his earlier focus on happiness as positive psychology's central aim: happiness, measured mainly through momentary mood and life satisfaction surveys, captures only a narrow slice of what makes life feel worthwhile. Someone deeply engrossed in demanding, meaningful work might report relatively little moment-to-moment pleasure while still experiencing a profoundly flourishing life, and Seligman argues that measuring only cheerful mood would misclassify that person as unwell. He wanted a framework that could accommodate people who pursue difficult, absorbing, or self-sacrificing paths that don't necessarily maximize pleasant feelings but clearly constitute a life worth living by almost any reasonable standard. This reframing set up the more multidimensional model the rest of the book develops. Takeaway: a life can be flourishing even when it isn't constantly pleasant.