If the material is inspiring and motivates you, then it doesn't really matter what it is.

My inspiration was my mom. She's a great cook, and she still cooks, and we still banter back and forth about cooking. Growing up in a mostly Portuguese community, food was important and the family table was extremely important. At a very young age I understood that.

The great book for you is the book that has the most to say to you at the moment when you are reading. I do not mean the book that is most instructive, but the book that feeds your spirit. And that depends on your age, your experience, your psychological and spiritual need.