Many of those students have a relatively sophisticated understanding of startups and business, but they tend to misunderstand "the startup of their life," Brooks finds. "If you want to become a billionaire in the business of life, it's not about money or power," Brooks says. "Chasing feelings [of happiness], which is like chasing the smell and trying to get healthy, is not going to work," Brooks says. The answer is a "very big, ethereal term," according to Brooks: "Calling." But you're not going to be happier, and you're going to be drawing the wrong kind of person."