Instruct: Classify the given review as either positive or negative.
Query: Stimulating, thought-provoking and immensely encouraging

I found this book to be stimulating and encouraging - rather than focus, as so many books do, on traditional concepts of 'aging' and 'retirement' as end points of life, this book illuminates the extraordinary opportunities for growth that can be available to those who permit themselves to take advantage of them. I've read it several times; with each reading, I see more parallels with my life. I would recommend it to anyone reluctant to surrender to stagnation and interested in learning about some remarkable, and clearly real, people.