I'm digging semi retirement four weeks into it. My work is such that they just give me special projects to take care of, kind of doing the oddball things nobody else has the time for. Have been going in early about 3-4 days per week, working till lunch time, then going home. Man, I am getting all kinds of projects done around the place with all of this spare time, been fishing, hunting, chores and projects around the home and farm, doing extended weekend trips, etc. Taking quite a bit of time off in Nov & Dec for hunting trips, then I'll just put in more work hours later. There will be times of the year I work quite a bit, and times I loaf quite a bit.
I'm going to stay with this plan for a couple years, so long as the boss remains happy with what he's getting.