Just because this book is a couple of years old has no effect on the "people principles" that it exploits to get to the money. It is ultimately the interaction between people, those with capital who willingly give to others in exchange for value that they seek-- that gives the ones who do it more efficiently than average the chance to live any way they want.
I agree with Harv Eker, New York Times bestselling author of Secrets of the Millionaire Mind, who says on the cover:
"You have a choice. You can spend 10 million dollars or 10 lifetimes to learn this rare information... or you can read this book. Every single thing you need is in it."