I'm also 60 and probably retired - maybe I'll find some work again when the tech job market recovers - and I'm spending a lot of time trying to figure out what to do next.
The author of the piece says:
"The great benefit of this process, even as I struggle with it, is it gives me a rounded view of my life."
While I can understand that spending some time reviewing the past can have value, what this person is doing seems excessive and I'm not sure I'd call it 'rounded'. I think in my case thinking about the past can reveal how things have or haven't changed in fundamental ways. For example, I was reminded yesterday of a local startup in my area that was working on a neural network accelerator chip in the early 90s and reflected on how many companies are now trying to do the same. There's nothing new under the sun as a wise man once said - what has been will be again. This kind of reminiscing gives perspective.