I read this book a few years ago and really would recommend it. I believe it was mentioned in The Phoenix Project and I added it to my reading list.
Much like Gene Kim’s work Five Dysfunctions is a story, in this case of an exec team at a high flying company who are struggling. They have all the best people, but the company is failing.
Lencioni talks about how safety acts as the foundations for a team to be able to challenge each other and succeed. It really hammers home how people feeling comfortable sharing their strengths and weaknesses leads to dull meetings, lack of accountability, and poor results.
Not a difficult read, lots of useful information – definitely one to add to your reading list if you’ve not read it already.