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    How to break bad habits -- and form new ones

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How to break bad habits -- and form new ones

How long does it take for a new habit to stick? Dr. Sanjay Gupta shows the stages your brain has to go through to keep that New Year's resolution.

How to break bad habits -- and form new ones

How long does it take for a new habit to stick? Dr. Sanjay Gupta shows the stages your brain has to go through to keep that New Year's resolution.