Essayist Joseph Epstein writes, “Of the seven deadly sins, only envy is no fun at all.” He goes on to say that envy makes us look “ungenerous, mean, and small-hearted.” There’s plenty of research to back up Epstein’s statement. In fact, psychologists have found that envy decreases life satisfaction and diminishes well-being. It’s correlated with depression and neuroticism, and the hostility envy breeds may actually make us physically sick.