" If you've ever felt a strange sense of sadness or alienation, there's a potential way out of the confusion- just shift this feeling into a sense of purpose. It's not about happiness, although happiness often results from doing something you love. Instead, it's about challenge and fulfillment, finding the perfect combination of striving and achievement that comes from reaching a big goal. "

― Chris Guillebeau , The Happiness of Pursuit: Finding the Quest That Will Bring Purpose to Your Life