Pretty disposable book, specially if you not a 'in-house' Designer.
The first half can get you one or two tips on how to sharpen your briefings, but aside from that, the book circles on ambiguous arguments on how Designers should not expose their work as mere artistic services to the client, while the author surely seems to believe that artistic endowment is exactly what design is all about. Like if we were to hid such trait from the other mangers at the company. The author seems to know this view is wrong, but fails to know what is exactly that design do, so his arguments end up getting really empty in some points of the book.
It also feels a little dated, considered how the mindset of many CEO's and Business Managers changed after de Apple shares boom and the widespread of Design Thinking in the first half of the 2010's.
Freelance/Studio Designer - NO
In-House Designer - Maybe, if you really don't have anything else more to read.