Why do habits exist? What happens inside the brain while they are being formed?

Numerous people featured in the book changed their habits, turning their lives around and meeting with success. List three people who did this and briefly explain how they were able to do so.

What is similar about the ways in which all habits develop? Are there any differences in how societal habits develop versus individual ones? Explain.

In the book, the author uses several addictions as examples of habits. What information does the author provide that helps explains why this is the case. What is it that habits have in common with addictions?

Explain the importance of so-called "keystone habits," and list at least three that might be useful to individual people.

Why was it so difficult for Proctor and Gamble to sell Febreeze initially? What did they have to...