I have just read a very good review of this book in the Economist. . I noted Dr. Glikin's advice to get an Advance Directive done and filed appropriately. I found the main problem in the three (!!) I have tried to fill out that I kept asking myself "How will I know?" I can't know now how I will feel because `now' is `now', and the future is pretty much an unknown.
I have just finished a book by the husband-wife physician team of Groopman & Hartzband YOUR MEDICAL MIND: How to Decide What is Right for You. I was interested to note that they do not think very highly of an AD.
One thing I am working on now in my head is the possible need to be willing to let go when hanging on will cost an unconscionable amount of money that could be better spent on a younger and more needy person.