i am horrible at this too, Neo : ( the best i can think of is eat a banana - and that is if there are bananas to eat...
taking a real rest, i do that, but i have to really force myself to get comfortable and not sit in a tight knot - it is difficult to say the least

hugs, i hear you

Sounds like the over-compensating portion of my cycle. When I try to follow somebody else's self-care plan, it triggers my "No-No Puppet Show." Every don't-do/must-do opinion from the 7th grade PE teacher to the latest preach on the evening news starts playing relentlessly in my head. If my parents had cared about how, much less whether I was cared for, I'd bet they'd be in the puppet show, too.

It's a tough cycle to break. I have to keep it on my daily inventory because I still slide back into self-neglect/abuse all too easily. In my latest round I have been trying the "Reframing Tool" and calling it "benign self-indulgence" instead of "self-care."

What works for one doesn't work for everyone else. On days, like today, where I feel my worst I up my self-care: I light candles (the smell is grounding), I take a hot bath and put on light music I enjoy, I eat foods I know I like and are healthy (even when I don't "feel" hungry) and most importantly I remind myself it is okay to feel however I feel (sad, angry, hurt, upset, fragile, etc). I deliberately avoid making plans and put on TV shows I have seen before and put on my favorite episodes even if I'm not feel that "into" them (I don't trigger and sometimes the humor still reaches me). When I need to, I grab a friend and talk it out.

For me as a person I realize my body "resets" when I sleep, so I focus those days on literally just making it through them without doing anything that might harm the day ahead of me.

I also have an app or two on my phone I enjoy using/play with, so that doesn't hurt.

My normal life stresses like washing laundry, homework, social obligations? I move them to the next day.

Sometimes, I think, self care is just getting yourself through the day. You don't have to solve anything; it's as simple as just letting yourself exist.

I'm sending you hugs and warm thoughts today as you sort through all of this.

I usually go to a chemist and pick up my favourite things, anything really, things for a bath mainly. I try to create a at home spa day with face masks etc.
Then try and keep the relax-ful day going with watching movies. Just simple things.