The pleasant life: a life that successfully pursues the positive emotions about the present, past, and future.
Martin SeligmanLife inflicts the same setbacks and tragedies on the optimist as on the pessimist, but the optimist weathers them better.
Martin SeligmanPositive emotion can be about the past, the present, or the future. The positive emotions about the future include optimism, hope, faith, and trust. Those about the present include joy, ecstasy, calm, zest, ebullience, pleasure, and (most importantly) flow; these emotions are what most people usually mean when they casually-but much too narrowly-talk about "happiness." The positive emotions about the past include satisfaction, contentment, fulfillment, pride, and serenity.
Martin SeligmanPeople who believe they cause good things tend to like themselves better than people who believe good things come from other people or circumstances.
Martin Seligman