I honestly believe that this is one of the greatest secrets to true peace of mind -- a decent sense of values. We could annihilate 50 percent of all our worries at once if we would develop a sort of private gold standard -- a gold standard of what things are worth to us in terms of our lives.
Dale CarnegieRemember happiness doesn't depend upon who you are or what you have; it depends solely on what you think.
Dale CarnegieSuppose you had inherited the same body and temperament and mind that Al Capone had. Suppose you had had his environment and experiences. You would then be precisely what he was. . . . For it is those things - and only those things - that made him what he was. . . . You deserve very little credit for being what you are - and remember, the people who come to you irritated, bigoted, unreasoning, deserve very little discredit for being what they are.
Dale Carnegie