When I was a kid, my brother and I had a game: pretend we won the lottery, and dream about what we would do with the money. My brother would come up with practical things like expensive cars and luxury homes, while I would dream of swimming pools filled with gum balls, a rope swing made from real licorice, or a whole room filled with puppies to play with my yard full of horses. While our dreams were pretty different, our beliefs were the same: more money would equal more happiness. And...