I really like that song; however, there are times when you don't have to go your own way.
It's true that rheumatoid arthritis can and does behave differently in each individual. The common denominator, though, is a disease that is disabling, debilitating and painful.
There is wisdom to be gained from those who are managing their disease well. Borrow from those who have gone ahead. Be a copycat. Find out what they are doing that is working well for them. Are there elements that you can adopt or adapt in your own life?
Finally, when you do try on a new behaviour, give yourself time to see whether it is right for you.
Note: Five minutes and twenty-four seconds. That's how long I was up on my feet dancing to that song. That's a pretty enjoyable way to sneak in some exercise and provide me with a break from the computer.