There are many business gurus’ books out there. I wonder if all they can be trusted? I mean how do you tell if this particular guy’s insight is priceless whereas the other just copy-pasted several pages from first’s book? How can you be sure that the business consultant you hired worth the money you are going to pay him?
They say those who can – do; those who cannot – teach. Ok, success-story books are all right. If the book were written by the guy who made his $100m, you could assume he knows what he is talking about. But there are the hundreds if not thousands of business books seeing the light yearly and not all their authors have the name in the business world…
Guess checking out the references will help. Amazon and other sites are a good place to do the research.