Just need to work through physio and be patient with it. Pushing through the pain will just lead to more pain that takes longer to heal.
I am also an older lifter and probably should have backed down at the earlier indications that a problem was developing. However it honestly was never more than some soreness that went away with warmups, so I wasn't really concerned about it.
On the mental effects, I can say that for me that exercise doesn't change much. I am generally in a better mood after a good workout, but with the recent injuries I have been feeling more frustrated and dejected. But these feeling are pretty much the same ones I have when I succeed or struggle with a programming task or other mental work.
Turkish getups are fantasic
Ask any serious runner how hard a taper can be before a big race and you’ll get some good insight.