I think it is easy to focus on the mental aspect of burnout and forget about the physical aspects of it as well. This hobby takes energy you may not be setting yourself up to have.

If you are deficient in a lot of vitamins because you are subsisting on mostly spaghetti-o's, your cognitive processing will be less than ideal. Exercise can also improve focus and concentration. Lately I've been posting after working out/cardio and then taking creatine (used to improve muscle recovery but also improves brain fucntion), and the words flow like butter.