Warren Buffett has spent a lifetime proving that mastery is not a simple numbers game. Instead of chasing an arbitrary 10,000-hour benchmark, he has built one of the world's most successful investing ...

With an estimated net worth of $160 billion, Warren Buffett could easily be labeled an anomaly. But if you want to be good at investing, too, he says, you can — just know that 10,000 hours of practice ...