Gretchin Rubin of The Happiness Project looks at passions and happiness. An excerpt:
A passion gives you a reason to keep learning and to work toward mastery. It can often give you a reason to have the new experiences so key to happiness. It gives you something in common with other people, and so fosters social bonds. It gives you purpose. It often has a satisfying physical aspect—rock-climbing, fly-fishing, knitting, smelling. It gives meaningful structure to your time. It makes the world a richer place. When you’re in pain, it can be a refuge, a distraction, a solace.