MINDSET
#1 on my list since forever is: Mastery by George Leonard. It is the single most important book I want you to read. It's also the book most stolen from my office by my kids who gave it to their friends. BUSINESS
#1 This is probably the most important business book you'll ever read. It's about growing a business correctly. When I demonstrated outsourcing a video some people asked why not do it myself or have Manus do it. This book is a classic. The E-Myth by Michael Gerber. Don't skip it. Now I have tens of thousands of books but I'm picking these for a reason.
If you haven't read them, grab them.