At 83 I do most of what I have always done; just slower, easier, look for mechanical assistance more, think things thru longer and figure easier ways than just jumping into it. Have some medical problems all under control, but worst is herniated discs and arthritic bone spurs in my spine. Another reaming operation would help but my wife is afraid I will not survive the anesthetic. Tramadol keeps it tolerable for now. You can tell on my welding that I am not as steady anymore. Still can lay well fused beads in spite of it, just look a little rough: use the grinder more. My second wife is 10 years younger so she is good help but worries too much about me, keeps me off the ladders. Biggest problem with the tractor is getting off and on a lot when doing dirt work. I find a gofer comes in real handy.
Ron