Picture this: you're hitting snooze for the third time on Monday morning, a pit of dread in your stomach as you think about that one particular coworker. Or maybe you find yourself losing sleep on Sunday nights, tossing and turning. If work is filling you with this kind of anxiety, it's time to take a hard look at why. Workplace bullying is a serious problem disguised in water-cooler gossip and "tough boss" excuses. But here's the thing: it's not about you.