Brain wash that is human being

Recently from my private issue, I realized how controlling one’s mind is difficult especially avoiding complaint feeling against certain person from trivial matter. Even though in the case that I owe very much to her and I think everyone may have similar experience. The action I took to remove such evil thought is praying that I just should thank her for the sake of the God but at the next moment I realized that I was back to the same evil feeling again. In this way I realized how human can be easily “brain-washed” even though I used to have a confidence that I will be the last person in the world to be brain-washed. That is because of the truth that human being is the creature that is at the mercy of brain wash. One simple example is that when you are watching a movie, you will be frustrated about how a hero is exposed to the danger even though we know it is not true story. My point , however, is that it can be occurred in the real world , too.