Congratulations Dan!
It sounds like you've earned it with your distinguished career so enjoy it BUT make the most of it too....or so I'm told!
I'm about three years away from the big R myself. My wife and I decided that July 1/2020 would be a great time to do it so hopefully that will come to fruition....2020 fits in quite well with my line of work too....Optometrist here!
If you don't mind me asking, what steps did you take in deciding that today was THE day? Long time planning or "to hell with this, I'm DONE today!"?
Cheers!