What if you could change your life without really changing your life? On the outside, Gretchen Rubin had it all -- a good marriage, healthy children and a successful career -- but she knew something was missing. Determined to end that nagging feeling, she set out on a year-long quest to learn how to better enjoy the life she already had.Each month, Gretchen pursued a different set of resolutions -- go to sleep earlier, tackle a nagging task, bring people together, take time t