If you’re a leader and you’re not interacting with Patrick Lencioni you are doing yourself and those you lead a disservice!
Lencioni has a wonderful story telling gift that he employs to teach critical leadership lessons! I like him because his books are simple, common-sense, and yet compelling. He looks at leadership issues through a refreshingly simple lens, and boils critical issues down to a “Gosh, how’d I miss that?” perspective.
paulpetersonlive.com 
Patrick Lencioni nails it in his book The Five Dysfunctions of a Team.
I have also read Silos, Politics and Turf Wars and Death by Meeting.
Reading those books changed how I do staff meetings and recruit leaders.