Fortune Telling

This kind of person should not go for fortune telling. The kind of person where if the fortune teller says "You'll have good luck." and become overjoyed and claims that the fortune teller is very accurate at it. But if the prediction is bad, his face immediately turns black and defame the fortune teller, telling everyone else that the fortune teller is a quack. But in his heart, he fears that what the fortune teller says would come true, causing him to eat and sleep bad. This cause the person to go from being OK to really going through a bad time all because of the way he thinks.

If fortune telling is accurate, one probability is that you have such a life therefore the fortune teller predicts it like that; another probability is that because the fortune teller predicts it that way, therefore you have such a life.

So what good is fortune telling?