+1 for vacations. I used to vacation only when I burned out. Now I plan in advance several months ahead. It helps me pace myself so I don't burn myself out before the vacation shows up. Personally I try to schedule two week vacations, leaving the work laptop behind when I go. Letting people know you'll be traveling, so they can plan around it, also helps decouple you from the work. If everything catches on fire when you are gone, they will realize it's necessary to reduce their reliance on you.