"Making Habits, Breaking Habits: Why We Do Things, Why We Don't, and How to Make Any Change Stick"

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It's that time of year again when millions of Americans vow to create good habits and break bad ones.

We welcome Jeremy Dean, the psychologist behind PsyBlog,  to explain why it is so difficult to modify our behavior -- and to stick with the change. His book is called Making Habits, Breaking Habits: Why We Do Things, Why We Don't, and How to Make Any Change Stick.