with decent jobs may be familiar with the other side of the life market, where you can trade money for extra minutes of sleep or free time. You could also call this the happiness market. The gist of the vast scientific literature on money, free time, and happiness is that you can’t exactly buy happiness—millionaires report feeling just as much stress about money as hundred-thousandaires. What money can buy is free time and sleep, which are so closely correlated with self-reported happiness that they’re almost the same thing. So if you have the means,