The word 'happiness' always bothered me, partly because it was scientifically unwieldy and meant a lot of different things to different people, and also because it's subjective.

I think you can be depressed and flourish, I think you can have cancer and flourish, I think you can be divorced and flourish. When we believed that happiness was only smiling and good mood, that wasn't very good for people like me, people in the lower half of positive affectivity.

What humans want is not just happiness. They want justice; they want meaning.

Martin Seligman Quotes