These are both Warren Buffett stocks -- and Buffett knows how to pick a good dividend stock.Investing doesn't have to be complicated, but it's not as simple as finding the next big thing, at least for most people. Long-term investing success requires a strategy that includes diversification, with a mix of different stock types that help grow your portfolio under good circumstances and shield it under worse circumstances. Only having growth stocks could be a risky allocation, especially when there are bear m ...