I just heard a podcast case study (the story of Ronald Read) about an ordinary old man who ended up with a net worth of $8 million. As an average person, he didn't do anything extraordinary or strategic; he simply made one correct move—he used his remaining money to buy blue-chip stocks. He did nothing else, just kept the money there day after day, letting the snowball grow over a lifetime. In the end, what started small became large, rolling out $8 million. Thinking about the largest position he held in his hands, it was still...