Edit: Teaching kids how to manage money, the time value of money, the basics of running a business, how markets work, etc., is painfully neglected by the schools. Young adults often have little knowledge of this, and it definitely puts them at a serious disadvantage.
I've read his book, and the fundamental idea of looking at money differently is sound. I know I look at money very differently now than I did when I was young. I.e. I view it now as a tool rather than a scorecard.
I rather believe in the "God can draw a straight line with a crooked stick" principle, so it's quite possible his advice is good, or at least part of it. Just figured it'd be good to know this about him.