When prices are generally rising, for example, greed leads investors to speculate, to make substantial, high-risk bets based upon optimistic predictions, and to focus on return while ignoring risk. At the other end of the emotional spectrum, when prices are generally falling, fear of loss causes investors to focus solely on the possibility of continued price declines to the exclusion of investment fundamentals. Regardless of the market environment, many investors seek a formula for success. The unfortunate reality is that investment success cannot be captured in a mathematical equation or a computer program.