OK, maybe this one's easier said than done, but a new study finds that working overtime more than doubles depression risk. If your hours have been climbing, talk to your manager about how cutting back or introducing flextime could make you a more productive employee. Or, if you've been coming in early and leaving later to prove your worth, implement tried-and-true strategies like taking stretch breaks to improve focus and cutting out multi-tasking (which has been proven to slash productivity), and see if you can't get back to the 9 to 5 instead of the 8 to 7. Then, prove yourself with results — not face time.