A great many people think they are thinking while keeping their prejudices without even rearranging them."It is harder to destroy a pregiudice than to split an atom." said Einstein.If someone is at least rearranging his prejudices he already is performing an unusual act of good will and even more thought as usually we can expect from people.Nothing is more difficult than to change one's mind, to admit that, what we thought for so much time until five minutes ago, was wrong. Just wrong.
A good daily exercise: Find out what might be a prejudice to be reflected. (It´s not as easy as you may think).