“The greatest discovery of all time is that a person can change his future by merely changing his attitude.”

– Oprah Winfrey, actress, talk-show host, philanthropist, business woman

 

“It isn't what you have, or who you are, or where you are, or what you are doing that makes you happy or unhappy. It is what you think about.”

– Dale Carnegie, 20th century American, self-improvement writer-speaker