If you learn to think like Buffett, you could end up making better decisions with less stress.Coca-Cola (KO 0.60%) is Warren Buffett's longest-held stock and one of his favorites. His holding company, Berkshire Hathaway, first bought shares of Coke stock in 1988 and owns 400 million shares.The big news revealed at the Berkshire Hathaway annual meeting last week was that it had sold 13% of its stake in Apple. While that sounds significant, and is, Apple remains the company's largest position by far, moving d ...