[drivebyadvice]

The metaphor I use to think about burnout is imagining your energy as a lithium ion battery. You can occasionally charge it to 100% and run it down to 0% without any real degradation, but if you start doing that every day it won't hold a useful charge after a while. Keep your charge between 20% and 80% if you can.

Also helps to maintain pretty firm limits on work time and not-work time, or even just having a small window of your waking day where you're on Do Not Disturb.