No matter how much you enjoy your job — a lot or a little — you've likely gone through a lousy work funk at some point, just like the rest of us. In fact, maybe you're experiencing it right now: you're tired, it's been a long day, and you're not entirely sure how to get through the rest of it in a functional fashion. The good news is, there are a quite a few things you can do to make your 9 - 5 run a little smoother, whether it's 10 AM or 4 PM. We've rounded up 11 of the best tips ahead, so you can get your professional groove back . . . and fast.