Gretchen Rubin, author of 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, knows a lot about changing one’s ways. After all, she had to really hold herself accountable during her year of trying to be happier!

Want to learn from this habit-changing machine? Check out this short video for a roundup of her best advice.

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