After months without a day off, it's official: You need a vacation. But you feel you just can't leave the office for a long weekend, much less five days or -- gasp! -- two weeks.
You ask yourself: "Will the office survive without me?" "What if I'm replaceable?" or "Will people resent me if I take some time off?" Instead of chancing it, you'll just check your e-mail a few times, leave your cell phone number in case someone needs to contact you, and dial into your weekly conference call.