I will go with Wanting by Luke Burgis. It makes the works of Rene Girard accessible. For me, it made me conscious of how much of our nature is simply copying others. Basically, one should make a conscious effort to select who to copy. Also, because we copy it means we would have a desire for the same object in which conflict can arise. We can realize this and take steps to mitigate possible conflict.
A surprising insight of the book is that having hierarchies reduces conflict. I wrote a summary of the book here: https://www.chestergrant.com/summary-wanting-by-luke-burgis