A smile is nature's best antidote for discouragement. It brings rest to the weary, sunshine to those who are frowning, and hope to those who are hopeless and defeated. A smile is so valuable that it can't be bought, begged, borrowed, or taken away against your will. You have to be willing to give a smile away before it can do anyone else any good. So if someone is too tired or grumpy to flash you a smile, let him have one of yours anyway. Nobody needs a smile as much as the person who has none to give.
Dale CarnegieDealing with people is probably the biggest problem you face, especially if you are in business. Yes, and that is also true if you are a housewife, architect or engineer.
Dale CarnegieHappiness doesn't depend on any external conditions, it is governed by our mental attitude.
Dale CarnegieTry to fix firmly in your mind what you would like to do; and then, without veering off direction, you will move straight to the goal.
Dale CarnegieIf we are so contemptibly selfish that we canโt radiate a little happiness and pass on a bit of honest appreciation without trying to screw something out of the other person in returnโif our souls are no bigger than sour crab apples, we shall meet with the failure we so richly deserve.
Dale Carnegie