WATCH: A Surprising Thing About Happiness, From Gretchen Rubin

08/27/2012 10:05 am ET | Updated Aug 21, 2013

Gretchen Rubin, author of "The Happiness Project" and "Happier at Home" told me about an unexpected activity that makes most people happier almost instantly when she joined me on Mondays With Marlo. It's fast and easy -- and studies prove that it works!

For more fantastic advice on lifting your mood, see Gretchen Rubin's tips on happiness:

Tips On Happiness From Gretchen Rubin

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