What you get is what you expect
Indeed. That's where I fall on the spectrum. Aging ain't great, nor, as they say, is it for sissies. But it is what it is, and those who expect the worst will surely have their expectations met. So sure, I'm stiffer in the mornings, but I assume it will go away and it does, even if I have a random stress flare. I'm not happy about the sagging skin, thinning hair, or disappearing eyelashes, eyebrows, and ass, but it's not like I'm trying to impress anyone. I'm on low doses of two old-school basic medications which are doing what they should without any side effects. My new rheumatologist says that my RA is "in remission with medication" which is fine with me. I know that there are many many people with RA who are clueless about the stress source of their inflammation, who don't achieve remission on ever-changing drug regimens, and who develop multiple other syndromes that we know are TMS.
I am quite sure, as a fully-committed TMSer, that I could reduce both my blood pressure and my inflammatory markers without the meds if I meditated every day for an hour, but I've decided that the self-imposed pressure of failing to meet that goal is worse than just taking the meds. Is it ideal? That's just another word for perfect, and the more I let go of perfectionism the happier I am. The last thing anyone needs right now is unnecessary pressure.
But of course the question is how to handle the majority of people in our lives who aren't on board. We can't isolate ourselves, that's for sure - unless a particular complainer has no other socially redeeming qualities... but even then, sometimes we don't have the choice to just cut someone out of our lives.
Leading by example, as Diana says, is going to be the one thing we can always do, all of the time. After that, different people or groups call for different strategies.
Don't enable the complainers to keep complaining. Be polite, but don't engage. Give yourself permission to tune out the energy vampires if you can't totally cut them off. You can always talk about the positive effects you experience with exercise. The "Yes, but ..." responses can be counteracted with logic ("take it slow, work with a PT or trainer, something is better than nothing")
. Invite someone to exercise with you. If only one person takes you up on it, that's a win!