Dan Haybron in Salon:
What exactly does happiness involve? When people think about happiness in emotional terms, they tend to picture a specific emotion: feeling happy. So powerful is this association that happiness frequently gets reduced to nothing more than cheery feelings or ‘smiley-face’ feelings. This is a radically impoverished understanding of happiness: there’s much more to being happy than just feeling happy. Think about those periods in your life when you were happiest. Not so much that day when you were elated over a special event, like the birth of a child. Rather, those times of relatively sustained happiness. Not everyone experiences such periods, but if you have, I suspect they looked something like our picture of Big Joe Fletcher, or the photograph of my father and me in [the picture above]: good stretches of time wholly absorbed in something you love doing, feeling fully yourself and in your element. Energized, alive, and yet also, deeply settled and at peace—no doubts, no fretting, no hesitation. And yes, feelings of joy here and there, perhaps a good dose of laughter. But those feelings are not the most important part of the story.
We can usefully break happiness down into three broad dimensions. Arguably, each dimension corresponds to a different function emotional states play in our lives. But in this book I will skip the argument and simply present the view. We can think of happiness as a kind of emotional evaluation of your life. Some parts of this evaluation are more fundamental than others. At the most basic level will be responses concerning your safety and security: letting your defences down, making yourself fully at home in your life, as opposed to taking up a defensive stance. I will call this a state of attunement with your life. Next come responses relating to your engagement with your situation: is it worth investing much effort in your activities, or would it be wiser to withdraw or disengage from them? Finally, some emotional states serve as endorsements, signifying that your life is positively good. People often make the mistake of thinking all emotional states are like that.