Four out of every seven common stocks in the United States have underperformed one‐month Treasury bills. And because there are so many lousy stocks, there's a high probability that over time, you will be exposed as an ordinary person, possessing no superior stock‐picking ability than the person sitting next to you. And being wrong again and again and again is mentally exhausting, especially when it comes to something as personal as money. Investors would be a lot better off financially if they would just keep their personal finances personal.
