I think it’s really good to do nothing if you feel content about it or truly need rest from something. I sometimes feel content with doing nothing but only if main things are done or I am truly resting. Otherwise I am very anxious about stuff not being done. So I can’t enjoy doing nothing. I think it depends how you feel about it. If doing nothing stresses you out, then it’s no good

As about setting goals or manage tasks. You might want to have your tasks and goals adjusted. Some of the things you assigned yourself would be too much for lots of people.

There are plenty of ways to decorate for holidays without putting up Christmas trees. It’s too much work even if one isn’t depressed or isn’t in pain!

Ton of nice ready made stuff out there including table top decorated little trees or arrangements with no tree. Decorating actual tree is not really needed in order to have holiday spirit. I’d spend that energy on something more long term (tree will have to come down some time before May so it’s yet additional task, who needs that?)

Just a thought. Make baby steps.

Today wash the sheets make bed and shower

Tomorrow clean up the kitchen and make a simple meal

One-two easy things a day

Etc