As you get older, your investing priorities change. Instead of focusing on long-term growth, your aim should shift to preserving your nest egg and creating an income stream that can help cover your expenses during retirement. So, since you're in your 50s and a decade or so away from retiring, look for stocks that can help you do that.A good place to start is with the Dividend Aristocrats, which are stocks that have increased their dividend annually for at least 25 consecutive years.