These powerful brands will help grow your savings for a happy retirement.Warren Buffett's investing career has inspired countless investors to follow his strategy. There's no better way to start imitating the Oracle of Omaha than to follow his stock selections at Berkshire Hathaway.Berkshire owns dozens of privately owned businesses, but Buffett looks at buying stocks the same way as buying the whole business. Here are two stocks from Berkshire's portfolio to hold for a lifetime.1. Coca-ColaCoca-Cola (KO 0. ...