78 years ago, a journalist studied 500 rich men and boiled down their success into 13 steps

At the peak of Andrew Carnegie's career, he crossed paths with an impressive journalist named Napoleon Hill, who he trusted to document -- and share with the world -- the strategies that turned him into one of the wealthiest and most successful businessmen of all time. "It was Mr. Carnegie's idea that the magic formula, which gave him a stupendous fortune, ought to be placed within reach of people who do not have time to investigate how men make money," Hill wrote in the preface of "Think And Gr...