Listen To Your Body

Speaking of the office, those long, stationary days can blow the wind out of anyone's sails. "One thing that people tend to forget about at work is paying attention to their bodies," says Rubin. "Make sure you're not too hot or cold, that your hair's not in your face, wear comfortable clothing and shoes, and make sure that the light isn't too bright."

If you're not sure about this one, says Rubin, do a soldier's salute with your hand shielding your eyes. If you feel a sense of relief, the lights are too bright in your workspace, and you could be headed for a productivity-killing headache in the afternoon. Rubin admits that she hasn't always practiced this healthy habit — she was once so busy that she worked with an eye infection for two weeks before finally getting it treated! Take care of yourself, listen to your body, and work will start to feel less like, well, work.