"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):
Peter A. Levine
In this culmination of his life's work, Peter A. Levine draws on his broad experience as a clinician, a student of comparative brain research, a stress scientist and a keen observer of the naturalistic animal world to explain the nature and transformation of trauma in the body, brain and psyche. In an Unspoken Voice is based on the idea that trauma is neither a disease nor a disorder, but rather an injury caused by fright, helplessness and loss that can be healed by engaging our innate capacity to self-regulate high states of arousal and intense emotions. Enriched with a coherent theoretical framework and compelling case examples, the book elegantly blends the latest findings in biology, neuroscience and body-oriented psychotherapy to show that when we bring together animal instinct and reason, we can become more whole human beings.