Gretchen Rubin is the author of awesome books like 'The Happiness Project', 'Better Then Before' and the soon-to-be-released 'The Four Tendencies'. She also hosts a podcast with her sister called 'Happier' where they talk about everything related to happiness.  This interview is great because Gretchen gives some really valuable insight into her show and heaps of great advice for anyone looking to start or grow their podcast.  Check out more from Gretchen at http://gretchenrubin.com