Relieve stress at work

(Forbes.com)

Find A Ritual: If people at work are getting on your nerves, and talking about it doesn't work or isn't possible, come up with a quick, relaxing ritual. This might include listening to a favorite song, closing the door for five minutes or going for a walk.
Plan For The Unexpected: Don't be the kind of business traveler who flips out when a flight inevitably gets delayed or cancelled. When you've got a trip coming up, think about what you could do with an extra hour if you hit a snafu. You could hammer out e-mails, walk the airport or eat at a leisurely pace. That way if it does happen, you are prepared.
Get Perspective: Your company lost a big client, the earnings report was awful and you blew a deal. It may seem like the end of the world, but what will the situation look like a year from now? Imagining some time and distance from a problem can give you perspective about a crisis.
Stretch It Out: If you hunch over your keyboard or have bad posture, you're probably wasting energy trying to sit up straight at meetings. Feel better and make it easier on your body to look alert by stretching. One exercise to try today: Stand in a doorway and hold your right arm at a 90 degree angle against the frame. Take a step and turn your body to the left. This alleviates muscle tension in your upper back, allowing you to better hold yourself upright.
Yoga In The Conference Room: Companies such as Balance Integration work with employers to bring stress-relieving classes to offices. Options might include yoga, tips for learning to meditate and regain focus at your desk and, for employees who spend all day sitting in their cubicles, ergonometric coaching.
Tell A Joke: Laughing when you're stressed out can help you gain a little bit of control over a situation. Even a lousy joke can help lighten the mood in an office. Try exaggerating a problem or poking fun at someone's silliness. Don't, however, make fun of the weak or put anyone down in a hostile way.
Leave Your Desk For Lunch: Munching while checking your e-mail is no way to eat. If you're eating lunch under stress, you're slowing your digestion and probably not paying attention to what or how much you're putting in your mouth. Set time aside to leave your desk and enjoy your food.
Know Your Body Rhythms: Pay attention to your body clock. Knowing whether you're a morning or night person can help you figure out when is the best time to schedule meetings or work on big projects. Do you tend to crash every day around 3 p.m.? Prepare for your afternoon slump by regularly eating a pre-emptive afternoon snack.
Get Physical: Exercise is a great way to relieve stress and recharge. Sneak some activity into your day by making an effort to get outside for a 10-minute walk, especially before a stressful meeting. Make sure you follow through on this goal by asking a coworker ahead of time to go with you.