What's a book nobody talks about, that every entrepreneur should read?

I don't know if nobody talks about it but I think The E-Myth Revisited had some valuable ideas

The E-Myth Revisited from M. E. Gerber. School has never taught me how businesses work, it only trained me to be a good employee. Naturally, you can't build a business with that knowledge only. This book acknowledges that and fills in the gapps. Highly, highly recommended.

I believe that these books are the ones that convert normal people into entrepreneurs.

The Psychology of Money by @morganhousel, or as I call it: How to Gain the World Without Losing Your Soul.

Everyone talks about it but I’ll say it again because it’s so insightful to read:

Impacted my personal and professional life more than any other book.

The biggest attribute we see over and over again amongst successful entrepreneurs? Their ability to focus, ignore 80% of whats coming at them & just double down and execute on the 20% that actually moves everything forward giving outside return

The Focusing Question: “What’s the ONE Thing I can do / such that by doing it / everything else will be easier or unnecessary?”

The original and best self-help book. So much has been twisted since. Can't go wrong sticking to Psycho-Cybernetics. I was coached by Matt Furey, the current owner. Life changing.

Psycho-cybernetics by Maxwell Maltz is hands down the most impactful book I've ever read. One of my favorite quotes from it: “A human being always acts and feels and performs in accordance with what he imagines to be true about himself and his environment."

"Go-Giver" by @BobBurg should be in top of business books and yet many people somehow don't know it ("them" actually, as there are 4 books).

The Dip by Seth Godin. Nobody talks about how to know when enough is enough and when it’s time to move on. This book does that.

Paulo Coelho - The Alchemist