These stocks have seen better days but investors shouldn't count them out in the long run.A $5,000 investment can go a long way if you're investing for years. While the stock market's long-run return is around 10%, if you invest in a struggling stock that has a lot of room to rise higher and potentially outperform the market, your gains could be much more impressive. For example, if you were to generate a 15% average return over 22 years, a $5,000 investment would grow to more than $100,000.I'm not saying t ...