One obstacle to happiness is feeling resentful when another person won't do his or her share of the work. In Happier at Home, in my description of the three kinds of "happiness leeches," this kind of person is a "slacker."
Resentment comes when you feel angry that you've been treated unfairly. But what is "fair" when deciding who should do what work? As I thought about my own (not infrequent) bouts of resentment, I identified these Six Facts About Shared Work.