Enthusiasm is that ingredient of vitality mixed with a firm belief in what you are doing that ensures the success of any project you undertake.

Let's fight for our happiness by following a daily program of cheerful and constructive thinking.

Criticism is futile because it puts a person on the defensive and usually makes them strive to justify themselves. Criticism is dangerous, because it wounds a person's precious pride, hurts their sense of importance, and arouses resentment.

Pay less attention to what men say. Just watch what they do.

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.

Talk in terms of the other person's interests.

I once succumbed to the fad of fasting and went for six days and nights without eating. It wasn't difficult. I was less hungry at the end of the sixth day than I was at the end of the second. Yet I know, as you know, people who would think they had committed a crime if they let their families or employees go for six days without food; but they will let them go for six days, and six weeks, and sometimes sixty years without giving them the hearty appreciation that they crave almost as much as they crave food.