Remember Sartre’s famous line “Hell is other people”? It’s true—the world is filled with difficult people (or, as John would have it, “idiots”). I’ll bet you could name five truly difficult people off the top of your head right now—some you assiduously avoid, others you would assiduously avoid if they didn’t share your last name. But sometimes—more often than we tend to realize—those difficult people are us.

