The word happiness is used to indicate at least three related things, which we might roughly call emotional happiness, moral happiness, and judgmental happiness.
Daniel GilbertWe treat our future selves as though they were our children, spending most of the hours of most of our days constructing tomorrows that we hope will make them happy
Daniel GilbertWhen we have an experience -- hearing a particular sonata, making love with a particular person, watching the sun set from a particular window of a particular room -- on successive occasions, we quickly begin to adapt to it, and the experience yields less pleasure each time. Psychologists call this habituation, economists call it declining marginal utility, and the rest of us call it marriage
Daniel Gilbert