Do 1 task a day, no matter how small it is, do it consistently for a week or two. Then every other day you do 2 tasks for a month, and you start working up to a point where you feel you do what you can within your limits and get joy from that 1 (or 2) items you can scrap off.
If you live with family focus your tasks maybe on easing their life, pull out 10 weeds out of the garden, take out the trash, fix a squeaking door. Small but attainable things.
Chronical pain is a mess, it's relentless and it's always there, it doesn't go away, but you learn to deal with it. Focus on the pain initially, learn what pain you have and focus on it. I learned to focus on it and make a mental note (do not know how else to say) that it's not worth paying attention to, and I get by without medication. It's not always easy and there are days where you want to cry and cry and just fall asleep so you do not have to feel it.
It's normal and accept that not all days will be the same and successful.
It's a tough hill you are up against, but all shall pass and all will be well in the end. It's unbelievable sometimes, but all shall pass. Remember that.
Good luck, don't falter, reaching out is the first step!
As such I modified swaits/lazyjj to blazingjj.