What an odd feeling waking up with the realization that one is 60! All manner of thoughts crowd in: I can't possibly be 60; I can't possibly NOT be 40 anymore; this means the next biggie is, gulp, 70!; I'm running out of time; I now have the best time to get real work done; I can't wait to not have to work ever again; and finally (for now) "this explains why I'm tired all the time."
So here's the best way to celebrate 60: revel in it, in the latitude it grants you, in the truly vast amount of experience and understanding you've acquired. Don't assume there's little time left--or there may be, and take your own advice about living every single blessed day like you should have been doing at 16 and thought everyone slept till 11 a.m. like you did.
By the way, Mariah has outdone herself; Cherry Ridge Retreat is way beyond wonderful into, well, perfect. Best B'day ever, dear one, thank you from the bottom of my ancient heart. I love you. Can't wait to see what you have in store for 100.