I say it is better to be in your position than mine. I foolishly outed myself at work thinking, rather naively, that I have a disability and that if people knew that and I had accomidations, then I could do a better job. All it's earned me is constant extremely poor reviews. (For example, my bosses and HR gave me a 2 out of 5 for customer service skills, but 98% of surveyed patients gave me a 4 or 5....) I've been told I can never receive a promotion, or be moved into a position which may be more beneficial for my health. I am the constant watch list. One mistake when someone is in a bad mood, and I'll be fired.

So let your co-workers be jealous. You've been at the same job for 13 years! That's amazing! Just because you have a health issue doesn't mean you didn't earn your promotion.