"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 No Asshole Rule: Building a Civilized Workplace and Surviving One That Isn't
Robert I. Sutton
In a landmark article published in the esteemed Harvard Business Review, Stanford University professor Robert I. Sutton addressed a taboo topic that affects every workplace: employees who are insensitive to their colleagues, corporate bullies, bosses who just don't get it, the kind of people who make you exclaim in exasperation, "What an asshole!" Now, in a definitive book that addresses this growing problem, Sutton shows you how you can work with unsavory people without becoming one of them yourself.