Psychologists say that the reason for hostility to the man in the projection. A projection is a defense tool that is based on attributing to another person a quality that has been pushed out of one's self. Simply put, irritation is caused by the fact that we do not allow ourselves or the trait of character, which is not allowed to be in their own personality. An unpleasant person can be anyone: a relative, a child, a colleague, a neighbor, a boss. Proximity and constant communication with the person causing irritation poison existence. Relations with close, but unpleasant people invariably deteriorate because of feelings of guilt for their own irritability.