Watch a movie
Yes. I’ll read or watch something funny like Bob’s Burgers. Just being alone can be self care and everyone needs self care.
When I am tired, which is all the time, I sleep a lot, or relax watching tv / movies or do some reading.
I also get blood transfusions. They not only help keep me alive but help with energy. I get them because of my rare blood disorder.
I also will do some chill walking workouts. They help with body energy, sleep, digestion, a lot of things.

I get being so tired and stressed. Sometimes you just have to do things for yourself and that includes relaxing, sleeping and self care.