I wonder if learning about others who have created a wonderful second life would be helpful. Seeing where others thought they came to the end and found that, though the years may be short that remain, the is a deeper life.

I saw Art Linkleter a few years ago, at i think 93 years young. He was starting to learn Chinese and work on a wind power plant in China. Continuing to learn, with a purpose, seems to make the number of years left an irrelevant thought.