The stock market brings the moneymaking opportunity to those who lack financial security. For the people who know what they are doing, the stock market is really an economic paradise. However, stock market is also a place where experienced people get a lot of money, and those who have money can get a lot of experience. However, a gain is easy, being fruitful in the stock market is difficult. Stock market gives a challenge to your self and your nature. The reason why ordinary investors lost more than gain is due to their human nature! To be more specific, the human nature of risk-averse, anxious to be rich, opinionated, follow suit, too conservative and revenge, are all become traps of the stock markets. Put it more simply, greedy and bias are the main causes for general investors to become (almost certainly) a loser.