I struggle to find any content produced by Simon Sinek which I disagree with, and this is no exception. A presentation on Leadership and what makes a great leader; which can be easily adapted to project leadership. There is also a big emphasis on creating an environment where people are productive through feeling 'safe' and inspired.
Watching the video below, is time well spent.
https://www.youtube.com/watch?v=lZND4OirVQs