I think the law of attraction exists. For example, a person that you see for first time behaves badly, you will think he or she is very rude. It is hard to change your mind though she or he actually isn't a rude person. You will see all the behaviors and words of that person in negative ways. If you see her of him helping others, you might think she or he is very pretentious in front of people. It is same things as someone sees the glass with a half water left and says, there is half water left! And another person says, there is only half left' The view point makes you to be negative or positive. So the effect of the law of attraction is can affect strongly on people.

CORRECT:

I think the law of attraction exists. For example, if a person you meet for the first time behaves badly, you will think that he or she is very rude. It's hard to change your opinion about him or her even though he or she is not that kind of person. If you see him or her helping others, you might think he or she is just pretending in front of them. It is the same thing as how someone sees the glass as half full or half empty. It's how you view the situation that makes you a positive or negative person. So the law of attraction can strongly affect people.

*Sentences were rephrased. Opinion is a thought or belief about something or someone. See the glass half full means to believe that a situation is more good than bad.