What I loved best about this book was the refreshing take it had compared to a lot of business and management books I would go on to read. something about this book is distinctly masculine and as a young guy. 26 when I read this for the first time, it was a breath of fresh air. He mentions the mandate to train yourself in leadership to not rest on your positions laurels. And the controversial approach of managing your bosses or in other words applying management strategies to more than just subordinates.
"Principles" is likely the word I'm looking for but it seems too simple to encompass the kind of perspective this book gave.
10/10 recommend to others for reading.