Author Gretchen Rubin talks new book, ‘The Four Tendencies’

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CHICAGO -- She is one of the most influential writers on human nature--her previous book "The Happiness Project" was a best seller.

Gretchen Rubin tackled personality types in her new book, “The Four Tendencies: The Indispensable Personality Profiles That Reveal How to Make Your Life Better (And Other People`s Lives Better, Too)."

She stopped by WGN to discuss what the four categories, which one is most successful and whether or not you can change tendencies.