What do you do when you encounter sudden distractions that fatigue you?

If the distractions can wait, write them down on a paper and address them later. If they cannot wait then address the distractions mindfully without nay regret that you are unable to focus. I think it's regret or another negative feeling that causes the burn out really

Decide if I truly need rest. We honor people that work themselves to death but that creates unproductive people and less creativity. So decide if you actually need to do a self care night and don’t feel guilty once you decide.