There is only one person who could ever make you happy, and that person is you.
David Burns, Intimate Connections
The happiness of life is made up of minute fractions—the little soon-forgotten charities of a kiss, a smile, a kind look, a heartfelt compliment in the disguise of a playful raillery, and the countless other infinitessimals of pleasurable thought and genial feeling.
Samuel Taylor Coleridge
Happiness consists in activity: such is the constitution of our nature; it is a running stream, and not a stagnant pool.
John M. Good