I have my own issues, and similar to your story, was forced into an early retirement due to those medical issues. It does suck, my retirement would have been much larger in just four more years. But it is what it is, I can’t roll back time, I just have to deal with it.
And similar to you, I believe in the work ethic, and know for a fact I was a star employee when it came to productivity.
I really wish you find a salve for your pain, and hope that maybe that stuff about acupuncture points may lead to some relief. Of course, nothing is promised, it is just one item to investigate.