you’re trying to decide whether to leave a given job or relationship, say, or to redouble your commitment to it, asking what would make you happiest is likely to lure you toward the most comfortable option, or else leave you paralyzed by indecision. But you usually know, intuitively, whether remaining in a relationship or job would present the kind of challenges that will help you grow as a person (enlargement) or the kind that will cause your soul to shrivel with every passing week (diminishment). Choose uncomfortable enlargement over comfortable diminishment whenever you can.