6. Go the hell outside
This may seem like a no-brainer, but it's shockingly easy to hole up for an entire day and forget you haven't actually stepped foot out the door. Bad idea. The change of scenery is not only good for your mental health, but exposure to fresh air and nature has been shown to improve cognitive ability.
7. No TVs
Unless you've been hired to annotate every episode of The Price Is Right, do NOT turn on the TV. If you need white noise to focus, stick to music.
8. Allow yourself the occasional casual day
When you feel you've earned it, treat yourself to some time working from bed or spread out on the couch. If you're up for it, consider picking up one of these to make it even more comfortable.