If you want to be a high-mileage CEO like Warren Buffett, it pays to be humble. That's the advice from the Oracle of Omaha, in his final Thanksgiving letter to shareholders as CEO of Berkshire Hathaway, released Monday.Buffett detailed a range of thoughts on the virtues of stewardship, honesty, and what he described as "good intentions" gone awry in attempts to rein in CEO pay. One broad takeaway was his call to continue learning and growing."Choose your heroes very carefully and then emulate them. You wi ...