I can understand this frustration so well. I was just talking about this with my therapist the other day. I worked with a traumatic brain injury and chronic back and hip pain like it was nothing. I didn't let either stop me from doing a PhD program. And now, I can't fully work and my injury has nothing to do with my job. I work in an office and my right foot had the original Injury. I can do my job without a foot, except I can't. And I can't even wrap my head around this condition. Anyway, I just wanted you to know you aren't alone and I do very much hope you get to do what you love again soon.