Everybody in the world is seeking happiness - and there is one sure way to find it. That is by controlling your thoughts. Happiness doesn't depend on outward conditions. It depends on inner conditions.
Dale CarnegieAn effective speaker knows that the success or failure of his talk is not for him to decide - it will be decided in the minds and hearts of his hearers.
Dale CarnegieOne of the surest ways of making a friend and influencing the opinion of another is to give consideration to [his or her] opinion, let [him or her] sustain a feeling of importance.
Dale Carnegie