The data show we can do something about upward mobility. Every extra year of childhood spent in a better neighborhood seems to matter.
Be happy, but be happy through piety.
It takes a lot of things to work together in order to be wealthy but with a little luck, a lot of luck. . . You've got to be good at something. For a 20-year-old, you don't have to know exactly what you want to do, you've just got to go find something you can be great at, and then go be great at it.