You can also try this with the less harmful types—the ones who are chronically late, for instance: giving them a taste of their own medicine may open their eyes to the irritating effects of their behavior. In any event, you must never leave the passive-aggressive time and space in which to operate. Let them take root and they will find all kinds of sly ways to pull you here and there. Your best defense is to be sensitive to any passive-aggressive manifestations in those around you and to keep your mind as free as possible from their insidious influence.