Do you feel a creeping sense of doom come Sunday afternoon? You're not alone. According to a Monster.com international poll, 76 percent of U.S. respondents felt "really bad" Sunday Night Blues. And really, there's a lot to be bummed about: the weekend is ending and the work week is approaching (and hump day is still a long way off). No matter your job, you might feel sad that your personal time is coming to an end again, but there are ways to fight those blahs.