The key to happiness in parenting.

Instead of asking parents and non-parents whether they are happy right now, we might ask whether they are becoming more like the people they want to be. And then we might see children not as factors that may or may not be contributing to our happiness, but as opportunities to practice what most of us -- perhaps me most of all -- need to do more often, which is to put someone else before ourselves.

I think that's true in more than parenting.