Get away from the computer! Burn out happens a lot when you work from home because work is a moment away. I'll take the dog for a walk, break to` watch a TV show with my wife, or go for a quick drive.
For those of you who work in an office: make yourself leave on your lunch break, don't eat at the computer. At the very least go for a drive. When you walk outside and you see trees and grass and people doing things other than punching keys, you'll remember that life is more than work!