It isnโt what you have or who you are or where you are or what youโre doing that makes you happy or unhappy. Itโs what you think of it. Two people may in the same place doing the same thing, and yet one may be miserable and the other happy. Why? Because of a different mental attitude.
Dale CarnegieWhen Theodore Roosevelt was in the White House, he confessed that if he could be right 75 percent of the time, he would reach the highest measure of his expectation. . . . If that was the highest rating that one of the most distinguished men of the twentieth century could hope to obtain, what about you and me?
Dale Carnegie