I wouldn't say it was petty.
I only joined this site today because of a relapse.
The relapse was triggered partially by money/success.
It seems we're about the same age too, from what you've said.
I think watching the progress of others can make you look at yourself more negatively than you're even used to. Many of the people I know are married, engaged, have/expecting children too. I've sort of come to decide that it means little to me. (Easier to focus on when I'm feeling less negative of course.)
With wasting away the early twenties, I feel that too. I've also spent them working a lot.
I guess with me, I keep thinking about those awesome people in their fifties who are riding motorbikes and have pink mohawks stuck to their helmets. Or the elegant old woman I saw a few months ago sitting outside a mall near me.
She had these long cream tailored trousers, a soft yellow cardigan, those typical short white curls, and a dear smile. Yet you could see the intense tattoos covering her arms from where she'd pushed her sleeves up.
It's never too late to do you. You'll always be you.
I wish I could help more, but I'm not quite there yet myself.
You're not alone is all I can really offer right now.