■ The inversion of the 4th Law of Behavior Change is make it unsatisfying. ■ We are less likely to repeat a bad habit if it is painful or unsatisfying. ■ An accountability partner can create an immediate cost to inaction. We care deeply about what others think of us, and we do not want others to have a lesser opinion of us. ■ A habit contract can be used to add a social cost to any behavior. It makes the costs of violating your promises public and painful. ■ Knowing that someone else is watching you can be a powerful motivator.
