It was an OK book but it felt like it took a while for it to get started as well as some other problems I had with it.
The book starts to feel a bit repetitive as Dan begins to cite study after study. More depth on the stories would have been made the book stronger. Like all of Dan's books, which is Dan's greatest strength, he identifies a trend and makes it accessible to everyone. Dan's done the same with Free Agent Nation, Whole New Mind, Drive, and even Johnny Bunko. It lead me to many new ideas that I'm excited to look into further.
EDIT: I've been thinking about this for a bit, because I really want to like this book more, and I think I've come up with a reason why I settled with a 3/5 rating. Compared to A Whole New Mind and Drive, the model Daniel gives as a take away in this book isn't as impactful.
From A Whole New Mind I was introduced to this idea of right brain vs left brain and that gave me a framework to work with. I could suddenly identify logic, emotion, imagination, analytics as traits of the right or left brain.
Drive let a very clear impression in my head that Purpose + Mastery + Autonomy = Dream job.
I find To Sell Is Human's model weaker and not as clear. Attunement + Buoyancy + Clarity = Moving Others. I don't find the elements of this equation as concrete as the one in Drive. The equation also leaves out the themes of the final chapters of the book: Pitch, Improvise, and Serve. Without a framework to fall into, Pitch, Improvise, and Serve easily slip away.
While Drive had me identifying opportunities for mastery and autonomy, as I read To Sell Is Human I found myself looking for ways to improve my attunement, buoyancy and clarity. Being able to identify the ABCs as keys to moving people, not to mention Pitch, Improvise and Serve is not useful if I can't do them!