I'm right there with you at 52.
I saw a guy at the gym today that I stop and bullshit with from time to time. I always thought he was in his late 60s, maybe 70 at most. Turns out he's 82. Now, he doesn't look he was ever very muscular and he's not now, he said he only started working out in his 70's. I asked him what keeps him so young. He said he's just always tried to enjoy life. Tried not to stress out about shit. Take it easy, go with the flow sort of thing. If something feels good, do it... as long as it's not hurting anyone. And he never worried about getting old because nothing can stop it. He looked at me when I told him I was 52 and just laughed "Ahhh, You're still just a kid! You got a lot longer than you think before you have to start worrying about your age."
Perspective.