I'm 70 yo and blessed with a good health condition, for which I'm grateful. However, part of that is by my own doing.
I do not "listen to my body" too much, because what if it says:
"Oh it's so cold and damp outside, and windy. Let's just stay in bed for a little while longer. After all, we had ourselves some nice training yesterday - right?"
Eversince I started using a smart watch (Fitbit first, now an Apple Watch), the numbers and graphs definitely do count for me and I'm driven to close my rings every single day. My physical (and as a result, mental) condition keeps improving. I don't have a therapist, not even a house doctor. Yes, I am aware that not everybody can have that luxury, and I surely praise myself lucky to be in this situation. On the other hand, keeping it up is my daily struggle.
Rest assured, I don't always enjoy it - but I force myself and my body to exercise no matter what. My hope, of course, is that I can keep going like this for a long time still.
YMMV