Gratitude

In the fourth book of The Work and the Glory, a newly married couple are living in a sod hut that leaks mud when it rains. The wife suggests that they have a contest to see who can come up with more to be grateful for. They have fun with it, mentioning things like the fact that grass only grows up so they don't have to cut the grass on the ceiling. And at the end, they are both in a much better mood.

I think this is something everybody should probably do more often- look for the good and find the humor in the bad.