“I recently worked on a research project examining how one’s own “attractiveness” affects one’s view of the “attractiveness” of others.  One of his good friends, in fact, is a founder of PayPal and is worth tens of millions. But Hong knows how to make the circles of comparison in his life smaller, not larger. In his case, he started by selling his Porsche Boxster and buying a Toyota Prius in its place. “I don’t want to live the life of a Boxster,” he told the New York Times, “because when you get a Boxster you wish you had a 911, and you know what people who have 911s wish they had? They wish they had a Ferrari.” That’s a lesson we can all learn: the more we have, the more we want. And the only cure is to break the cycle of relativity.”

Ariely, Dan. “Predictably Irrational.”