I'm trying to find a non-fiction book I'd started reading perhaps 8-10 years ago, no earlier than 2010. It was either essays or an autobiography of life as an artist in one's 70s or perhaps even 80s. I think the author was male and lived in the US, perhaps on the east coast in a place with regular winter snow.
The author described what it was like being older, comparing their art and actions to when they were middle-aged. They described their schedule and emphasized the importance of putting in time for good food and good sex, even if it can't be exactly the same as what they did when younger.
I'm fairly sure I read about the book in a review in the NYTimes or similar. The review said the writing was excellent, which made me look at it even though it's a genre I rarely read.