The fact that this book remains so positive overall in tone despite so much of the darkness it describes is amazing. JVN's honesty and understanding regarding his past are an amazing model for how it can be possible to live through awful things and come out the other side. 
The writing is very Jonathan, which therefore works best if you imagine it as him reading to you - which is what the audiobook is! I wouldn't describe it as a must read, necessarily, but I might give the audiobook at go at some point just to really hear his voice reading his story!