Simon Sinek, Patrick Lencioni and John Doerr have all written secular books with huge application to ministry. Fill your stocking with these 3 resources. Key quote: “put more wood behind fewer arrows” (Larry Page).
The Infinite Game: https://simonsinek.com/product/the-infinite-game/
The Advantage: https://www.tablegroup.com/books/the-advantage/
Measure What Matters: https://www.whatmatters.com/