Why read this book? Because it is critical to optimizing your performance. Because it reveals the main coordinates after that are build the character and skills of the leaders, highlighting what it is important for them to increase their influence.
The essential characteristic of this book in comparison with others on the market in the same domain is that it describes through examples the ideal competences of a leader. I never claimed that it's easy to become a good leader, but if people will...
For some leaders, "leading" resembles more to a chess game, a game of cleverness and perspicacity; for others it means a game of chance, a game they think they can win every time risking and betting everything on a single card.
Without considering it a concord, the book is representing the try of an ordinary man - the author - who through simple words, facts and usual examples instills to the ordinary man courage and optimism in his own quest to be his own master and who knows... maybe even a leader.