Little bloke puts the version of Wonderwall I did at his age to shame haha!
Fark Dani, that's rough! Sorry to hear dude!
My old lady has rheumatoid arthritis, so not quite the same as your condition but a carnt of an autoimmune disease also. She's had plenty of ups and downs over the years, plenty of times where she could barely get out of bed while her immune system munched on her joints, but eventually her doctor got the drug concoction right and she's never let it stop her where. I remember she said my dad (years before they divorced) was ready to stop working and me a carer for her, but her doctor (specialist) told her in no uncertain terms she didn't need a carer and she could do whatever she put her mind to ... and having that mentality has helped her immensely over the years, because she obviously can't control the disease, but she can control whether she lets it control her and how she views herself.
My mum worked right up until she was early 60's and now she paints and gardens hard out in retirement. So I guess I'm just trying to encourage you to try and stay as positive as you can, as the human body can definitely deal with some chit!
Also sounds like you've got a great support in JET! Congrats on the anniversary!