The book is a very fragmented, a shortened version of papers. I have to say the book seems very like a how to be a perfect flattering person in your career. If you really believe you want to spend the rest of your life in a hierarchical organization. You just want to get promotion and earn money, this book can be your hidden gem but comes at the cost of literally giving up yourself to satisfy your boss(es) and colleague; this is far away from having an ego.