From wikipedia: "Happiness is a mental or emotional state of well-being which can be defined by, among others, positive or pleasant emotions ranging from contentment to intense joy." There's your definition.<p>Am I happy? Sometimes I am, but mostly not. Overall, I wouldn't consider myself a "happy" person. But I'm working on changing that. Working on becoming a better/happier person, oddly enough, seems to be one of the few things that bring me happiness.