You have it easily in your power to increase the sum total of this world's happiness now. How? By giving a few words of sincere appreciation to someone who is lonely or discouraged. Perhaps you will forget tomorrow the kind words you say today, but the recipient may cherish them over a lifetime.
Dale CarnegieLooking at the other person's point of view and arousing in him an eager want for something is not to be construed as manipulating that person so that he will do something that is only for your benefit and his detriment. Each party should gain from the negotiation.
Dale CarnegieCreate accomplishment from disappointments. Demoralization and disappointment are two of the surest going stones to achievement.
Dale CarnegieHappiness doesn't depend on any external conditions, it is governed by our mental attitude.
Dale Carnegie