It has helped me immensely to better understand how the relationships in this life are connected to past lives and relationships. Ever asked your self where have I seen that person before ? or seems like I know him/her from before? As I was talking to that person I felt that I was talking to my dad, wife, mom,brother etc...
I had a hard time dealing with loss of my beloved wife, brother, mom n dad, ..and yes this book helped to better conceptualise the loss and the pain.