HI, TBI/PTSD,

Those are big changes.
Do you have a therapist helping you with how you feel about your retirement next month?
Rural will be good because you will have fewer people around. However, you end up getting closer to them and knowing more about each other. There is good and bad in rural but you can make it work for you.
I imagine that moving in with parents (even though you will have your own floor) is causing consternation even though you are looking forward to it.

I have one big issue with staying with my parents.
Inside temperature:
They keep their inside temperature hot in the summer and cold in the winter. Their temps are so far off mine that I cannot visit them. They visit my husband and me once a year and stay in a nearby hotel for a few days -- they would rather get on a plane to come here than adjust their thermostat.

Other things with them like noise level or sleep times or keeping the kitchen clean or sharing the washing machine are manageable and reasonable.

I used do those things you mentioned like agree to do something with someone and then need to back out of it. I am getting better (not perfect yet) about reminding myself that I should never offer and try to never accept. It is hard to do that because it is a reminder of a limited life.

I suppose one can look at this kind of life as not really limited. We are busy in our heads and I think we have a humongous amount of stimulation going on compared to what other people have -- our inner lives are so big that we do not need to meet or plan activities with other people.

My old therapist reminded me constantly to limit stress and I think that she might have been talking about that. She wanted me to do more "breath work" as she called it and that was really the only work she gave me along with acceptance and remembering to eliminate as much as possible in order to be stress free. She included in that suggestions on keeping my living space clean and clutter free.
Your yoga and exercise is good.
Do your parents have a place for you to garden?

Mari