You want to be Zen at the office, but then your coworker starts humming that annoying Elliott Yamin tune—again. Your boss sends yet another erratic email, and your PC crashes for the fourth time that morning. Feel like you're going to lose it? Here's how to keep your head no matter what kind of chaos breaks loose in your cubicle. "Walk away from your desk," suggests New York City-based psychologist Frank Massino.

Take 15 minutes to roam the office and try putting yourself in your boss's or coworker's shoes. When you return, address the things that are irritating you (as politely as possible). Handle urgent responsibilities; everything else can wait until your mood improves.