I have some sympathy with most of the varying views expressed here. I have also noticed that at times i have to pull right back for months on my level of activity. this can stabilise me for a while, but i feel that once i start to spend too much time doing nothing but laying down i reac a point where i need to do a bit more in order to feel a bit better - and yes i do at this point start to worry too much about whether i should be standing up, trying to cook, shaving my legs etc etc.
Pacing helps for me, but i also find i need a small amount of push at times as well. Doing nothing for months on end makes me feel sad and angry. At other times though my health has been a bit better and i can do more, but then get slammed by an out of the blue infection or downward spiral. This has happened so many times and my condition seems to fluctuate so much that i never know if i am doing too much or not.
At one point i just gave in and went to bed for months - i first felt much worse, then gradually over two years improved and di more, started driving a little on my own and gentle pottering in the garden. Last year that all fell away for no reason when i had severe breathing problems and now i am worse again. Now slowly climbing back a little after a winter of being house and at times bed bound. Have started to do some housework again, and a few activities in one day - but im always terrified that i might be doing too much, or equally depressed at the thought of doing much less again.
One thing i do know is that if i do literally nothing my brain fog clears up - that includes no computer time at all. That is not sustainable and just makes me pretty unhappy. I have always felt for me that i needed to rest, but also to push a little. I am really feeling the deconditioning now after 8 months of being completely inactive and using a wheelchair for all outside trips. The other day i walked for 15 mins slowly into our woodland with my husband and kids for the first time in a year and it was lovely and amazing to do it - i felt fine after - still ill but no worse - but was so scared about whether i should be doing it or not, or whether i could do it again soon, or should i wait?
One of my problems is that when doing an activity like garden work or housework i cant tell its too much until i stop - and then i feel like im going to die. At one point i could push like that all the time and still work in the garden and still spring back, but now my resilience to spring back seems to be lowering all the time.
This fluctuation in symptoms drives me mad and i never know where i am. I also have times where i have a few really much better days a week or so, but always end up back to square one with no obvious trigger most of the time - could be Lyme maybe as that has a cyclical nature i think.