Remember that the people you are talking to are a hundred times more interested in themselves and their wants and problems than they are in you and your problems.
Dale CarnegieWhen dealing with people, let us remember that we are not dealing with creatures of logic. We are dealing with creatures of emotion, creatures bristling with prejudices and motivated by pride and vanity. ...Any fool can criticize, condemn, and complain - and most fools do. But it takes character and self-control to be understanding and forgiving.
Dale Carnegie