NEW YORK ( TheStreet) -- "Investors have paid a high price for being too negative," Jim Cramer told the viewers of his "Mad Money" TV show Tuesday. He said that while the markets have had a remarkable run in 2009, those who were too negative were left in the dust. Cramer recounted the three times this year when being too negative proved to be a costly mistake. He said the first inflection point was when the markets hit their lows in March. Back then, Cramer said even he was afraid to turn positive on the markets. But after a bottoms-up analysis of the Dow, he determined the lowest the markets could go was Dow 6,500, and the downside was just too limited not to be a bull.