I know how to do most things. I don't have the strength to do all things. I have put in new light fixtures, taken dead leaves off the roof, removed and replaced tires on the mower as well as changing the oil in it, diagnosed why my car wouldn't start and got it going well enough to get to town for a better repair, repaired a frozen plumbing line, put a new gasket between the tank and bowl of the toilet, repaired the roof, repaired the spot in the ceiling where the water got in, taped and mudded the guest house, painted the guest house............ I could keep going.
I spent most of my life sitting in an office and when I retired and was let loose at my little house in the woods I was in heaven and have loved learning and accomplishing all these things. I'm just getting too darned old to keep working like I have been and have started hiring a handyman for things I would have done myself a few years ago.