How many times we have seen our investment gains going up and giving us a pleasant surprise. We take it in our stride. Some of us take it as our excellent stock picking abilities while some are more humble and think this is all because of market as a rising tide raises all boats. Similarly, how many times we have seen a stock that has gained enormously in last couple of months has started downward slide for no apparent reason. This is the most frustrating experience. Again some of us blame the market while some are more humble and learn from the experience.