Exercise after work to clear your head
Sorry to channel your insecure high school gym coach, but he had a point about the benefits of getting off your ass. Exercising after work doesn't merely burn calories, improve strength, and help justify the beers you'll be drinking later -- it also clears your mind, turns off the body's stress response, and gives you a non-work goal to strive towards in your off time.
Communicate with your boss about your needs
If you think that you'd be a better worker if you, for example, were allowed to work from home once a week, bringing that up with your boss could let you set boundaries that help to strike that elusive work-life balance. Cohen emphasizes the importance of showing your boss that these steps will benefit the organization as a whole. He also explains that employees need to learn "how to say 'no' respectfully," letting your supervisor understand that taking on additional tasks won't help either of you in the long run if they're going to stress you to the point that it harms your performance.