I am surprised this book is not VASTLY more popular. It is the original conversation between Andrew Carnegie and Napoleon Hill. It is in interview format and far shorter than Hill's other works. I immensely enjoyed hearing the words "from the horses mouth". I found it fascinating that Hill was actually given the 17 Principles of Success before his 20 years of research.
I require anyone who works for me to read this book before seeing any of my clients. The chapter about going extra mile is worth the price of the book by itself. The only weak point of the book are the last 2 chapters, which were penned entirely by Hill. I have read all the books from Hill, and this one is by far my favorite. The Laws of Success comes a close second, but is WAY longer.
Do yourself a favor and hear "How to Raise Your Own Salary" directly from Andrew Carnegie himself!