So long as I can laugh never will I be poor. This, then, is one of nature’s greatest gifts, and I will waste it no more. Only with laughter and happiness can I truly become a success. Only with laughter and happiness can I enjoy the fruits of my labor. Were it not so, far better would it be to fail, for happiness is the wine that sharpens the taste of the meal. To enjoy success I must have happiness, and laughter will be the maiden who serves me.
— Og Mandino, The Greatest Salesman in the World