In fact, we come to associate having to expend effort and do things with our work, and associate relaxing and not doing anything with leisure time. So, because many of us don't like our jobs, we tend to associate having to do things with being unhappy, while happiness, as far as we ever know it, means... not doing anything. We never act for ourselves, because we spend our whole days acting for other people, and we think that acting and working hard always leads to unhappiness; our idea of happiness is not having to act, being on permanent vacation.

And this is ultimately why so many of us are so unhappy: because happiness is not doing nothing, happiness is acting creatively, doing things, working hard on things you care about. Happiness is becoming an excellent long-distance runner, falling in love, cooking an original recipe for people you care about, building a bookshelf, writing a song. There is no happiness to be found in merely lying on a couch—happiness is something that we must pursue. We are not unhappy because we have to do things, we are unhappy because all the things we do are things we don't care about. And because our jobs exhaust us and mislead us about what we want, they are the source of much of our unhappiness.

CrimethInc (Not exactly a bastion of rationality, but they do have some good stuff now and again.)