2. Adopt a hobby that is almost the exact opposite of what you spend the most time on.

Software engineers turn to playing music, mathematicians to stand-up-comedy, doctors to painting. When you remove yourself from what you do for a living (even if you enjoy it a lot, or even if you do it very well), you should do so while turning towards something almost completely unrelated to it. The effect becomes all too refreshing, and at the same time you are also taken from the environment that caused you to overload your schedule.