IF YOU KNOW WHAT YOU WANT YOU CAN HAVE IT . . . With this statement the author known by the initials RHJ put a dramatic challenge to readers in 1926. His claim was so sensational, so audacious, so begging of argument that one immediately wants to dismiss it. But for one thing: IT WORKS. RHJ's little pamphlet, It Works, has sold more than 1.5 million copies, and won the dedication of generations of readers who have purchased it by the fistful to hand...