I must admit before I read this book I was already a huge fan of Simon. It all started with his video on why leader eat last (https://www.youtube.com/watch?v=ReRcHdeUG9Y&t=2238s) and this led me to this book and it wasn't a disappointment.
The book really explains why brands and companies are successful, as well as why projects and teams succeed. It's all about starting with the why. . . . .
I think this is a must read for anyone to get a good understanding and to also challenge your leaders and bosses.