The mettle of investors has been severely tested over the last few weeks. Since the market's recent June highs, a litany of issues in Greece, Iran, and China have plagued the stock markets. Emerging markets have reached bear market territory while U.S. large cap indices have broached the "correction" juncture. U.S. small cap is in a bear market as well. Long term U.S. Treasuries have rallied. The dollar has weakened. Commodities, including oil, have tanked. It's enough to make an investor's head spin.