I’ve been a big fan of Joel Salatin for a while. I’m halfway through this book and it’s some of his best writing (ranting?) in my opinion.
Primary theme: Farming can both reflect and instruct your relationship with God (focused specifically on the Christian perspective).
Regardless of your religious leanings (or lack of), I think many people can walk away with some great thoughts on spiritual development as it related to how you work and operate with the land base you are given.
You can pick up the book on Amazon here.