It seems I'm in the minority here but I didn't love this book. I love leadership and I love discipline and I was hoping to hear some unique thoughts about these subjects. I had heard a recent interview from the author and was very excited about this book.
I simply didn't find any of the principles on leadership or discipline to be anything more than common knowledge. If you read books on leadership before or on discipline or military books, there doesn't seem to be anything unique here, in my opinion.
If you love War Stories especially in a modern context, this is an excellent book. It's well-written and fun to read. I just didn't particularly find it helpful.
For leadership technique or principles of self discipline, I would not recommend this book. For stories of overcoming challenges in Modern Combat and conflict, I would recommend this book.
But ultimately, given my expectations, I was pretty disappointed. I'm also disappointed at the great reviews it's got because I feel like I'm taking crazy pills here!
* Edit: I went back and read some of the lower reviews and I concur with all of them. I'm glad at least a few people noticed that this book was heavy on bragging and light on principles. The 90% five star reviews are only right if you love War Stories and don't really care about leadership or self discipline.