There are lots of ways of being miserable, but there's only one way of being comfortable, and that is to stop running round after happiness. If you make up your mind not to be happy there's no reason why you shouldn't have a fairly good time.
The "Presto" (third movement) of Bach's Brandenburg Concerto No. 4 in G, BWV 1049, performed by The Academy of St. Martin in the Fields, and conducted by Sir Neville Marriner. Because it makes me happy, that's why.