When I was diagnosed with a chronic illness (Essential Tremor) I took it hard. It took my then passion of bowling and made it nearly impossible. Then I swallowed that it was going to be a part of my life and became my own advocate. I took it as a challenge which ignited my competitive side. I wanted to know so much, find the best doctor and fight for me. Work against the challenge of RA. There are so many new treatments, if you aren't aware yet maybe you can learn about them.
You may not be the level you were but don't get discouraged, just grow and try to enjoy the training. Every day you can get moving you are winning one battle many people with RA won't fight. Someone told me at the line for one of my races "the only *** you have to kick is your own". So just try to beat what you feel you can do now, not what you did. Good luck in your journey, it is a change but judging by the links salsa posted it isn't one people can't overcome.
Amanda
2011 Specialized Epic Comp 29er | Specialized Phenom | "Marie Laveau"
2007 Cannondale Synapse Carbon Road | Selle Italia Lady Gel Flow | "Miranda"
You don't have to be great to get started, but you do have to get started to be great. -Lee J. Colan