Key PointsInvestor sentiment has been steadily dropping over the last month, even as the market hits record highs.Your investing strategy right now could make or break your long-term earning potential.10 stocks we like better than S&P 500 Index › Major market indexes may be reaching record highs, but many investors aren't feeling optimistic right now. The CNN Fear & Greed Index, which measures investor sentiment over time, has been steadily drop…