Great books on growing as a leader and manager (ranked in the order I’d recommend reading them).
The Heart of a Servant Leader by C. John Miller – a wonderful compilation of that pastoral letters of Jack Miller
The Conviction to Lead by Albert Mohler
Necessary Endings by Henry Cloud
The Servant by James Hunter
Lincoln on Leadership by Donald Phillips
Crucial Conversations by Patterson, Grenny, McMillan, and Switzler
Cultivating Epiphanies 