When you have your heart pulled out and shredded before your eyes, it is so very hard to trust in anyone, let alone give yourself to another, so great is the fear that the same thing would occur again. This is Zach's situation, where after his fiancée had cheated on him, he no longer trusted himself or others with his heart. Sam, on the other hand, trusted and dealt with othershonorably, trying to see the best case scenario in anything or everything. But, as the author stated " That life is not measured by the number of breaths we take, but by the moments that take our breaths away." This what this book is about, those breath taking moments.