In 1990, this was just one of three great books that turned my life from a tradgedy to success. Back in 1990, I had a huge business that came crashing down. I was jobless and pennyless. Dr Peale's excellent book and a book that I had read many years before turned my life around. Within weeks, I had found a brand new opportunity and within months my income was at a all time personal high. The other two books? They were "Think and Grow Rich" by Napolean Hill and More Wealth without Risk" by Charles Givens. I obviously highly endorse all three.
The priciples work. Please don't make the same mistake I did--read it and pack it away! Read the books, take good notes, apply and reread at once a year. It's very true that what you don't use, you'll lose. I know it happened to me.