If you treat an individual as he is, he will remain how he is. But if you treat him as if he were what he ought to be and could be, he will become what he ought to be and could be.
Throughout history there have been many who have defied those with negative attitudes around them. Because of their willingness to fight against the negative energy around them they were able to leave behind impeccable legacies for the rest of mankind to follow after. In the lives of these great people there were many who stood along their paths being negative and casting opinions of them that could have only tore them down if they had listened.