Rubin, Gretchen The happiness project : or why I spent a year trying to sing in the morning, clean my closets, fight right, read Aristotle, and generally have more fun / Gretchen Rubin - New York : Harper, c2009. - xiv, 301 p. ; ill. ; 24 cm. ISBN: 9780061583251 LCCN: Subjects--Topical Terms: HappinessSelf actualizationPsychology LC Class. No.: BF575 / .H27R83 2009