Can one page of a book change everything?

Here’s what the book description says – “Wall Street Journal Business Best-Seller Jeffrey Gitomer's Little Red Book of Selling includes 12.5 Principles of Sales Greatness and strategies and answers from a lifetime of selling that will teach you how to make sales forever. In this book, you will have the opportunity to understand why sales happen. And by mastering the elements that Jeffrey Gitomer gives you, you'll make sales happen for yourself forever.”

Here’s my one line review – page 28 changed my whole year.