I quit at 56 and simply do what I want. I'm a hunting/outdoors addict with millions of acres allowing public access. I hike, mt bike, shed hunt, scout, run cameras, sturgeon fish in the summer, work on my bows, hunt Sept-Feb in one form or another.
For fun money I sell a little fire wood, trap a few beavers and moles, and do some seasonal day jobs for an old employer when he needs a fill in during silage season. We only getting older being active is key IMO