"What is the book that changed your life? (not novels or religious texts)"
I think it's a wonderful way to connect in a less superficial way and learn a little more about each other. It's also a wonderful way to discover new books worth reading.
This is one of them (the full list is here):
In a revealing memoir, the award-winning Japanese writer recalls his four-month preparation for the 2005 New York City marathon, interweaving his reflections on the meaning of running in his life, his thoughts on the writing process and career, his greatest triumphs and disappointments, and his experiences as an author and as an athlete.