If you were to track the daily happenings that flatten people's moods, you would likely find rejection at the core. "A very high percentage of negative events are related to the feeling that someone else doesn't value a relationship as much as you do," says Duke University psychologist Mark Leary. Those are the sore feelings that accompany such thoughts as, "Why did my coworker brush me off in that meeting?" or "My husband is watching TV when he should be paying attention to me!" ...Observers see a wave of psychological fragility pushing individuals in our culture toward oversensitivity to rejection.