When someone (even yourself) gives you a rule to follow what do you do? Are you a Rebel, refusing to follow all directives? Or are you more of a Obliger who will respond to outer rules, but so much to inner rules? In this 99U talk, bestselling author Gretchen Rubin shares the four personality types when it comes to adopting new habits or “rules.” Knowing your personality type and its pros and cons are instrumental for us to adopt new habits and behavior.