Thomas Eugene Robbins (born July 22, 1932) is an American novelist. His best-selling novels are "seriocomedies" (also known as "comedy-drama"). His novel Even Cowgirls Get the Blues was made into a movie in 1993 by Gus Van Sant and stars Uma Thurman, Lorraine Bracco, and Keanu Reeves.
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The belief that unhappiness is selfless and happiness is selfish is misguided. It's more selfless to act happy. It takes energy, generosity, and discipline to be unfailingly lighthearted, yet everyone takes the happy person for granted. No one is careful of his feelings or tries to keep his spirits high. He seems self-sufficient; he becomes a cushion for others. And because happiness seems unforced, that person usually gets no credit.
Happiness is always a byproduct. It is probably a matter of temperament, and for anything I know it may be glandular. But it is not something that can be demanded from life, and if you are not happy, you had better stop worrying about it and see what treasures you can pluck from your own brand of unhappiness.