This is a very interesting read! I am loving it, am just past half way and dont want it to end!! It's based on a few very long term studies and it's just so fascinating traveling through these many life stories! I have been experiencing a mini midlife crisis and absolutely dreading getting old but this has given me a different (positive) perspective!! Such a great read, am reading out bits to my hubby and kids and they too love these stories! It really is an inspiring and touching read... lots of being moved to tears etc!! Wonderful!!!