Who makes the right choice?

In the stock market, everyone thinks they are the one who knows what is right. They put out their money to buy the stock they think it will be up. But 99% they are wrong. They lose money most of the time. When they buy a stock, the stock goes down; when they sell, the stock goes up. This is normal to every one in the stock market. Actually, similar situation to every one on all kinds of situations. You think you are right but you make a bad move. then, You suffer. You suffer because you think you are right. Good will words comes from a good will mind; Vicious words comes from a vicious mind.