Rather, to change a habit, you must keep the old cue, and deliver the old reward, but insert a new routine.

Belief is easier when it occurs within a community.

Small wins are a steady application of a small advantage.

A movement starts because of the social habits of friendship and the strong ties between close acquaintances. It grows because of the habits of a community, and the weak ties that hold neighborhoods and clans together. And it endures because a movement's leaders give participants new habits that create a fresh sense of identity and a feeling of ownership.

Research suggests that investment bankers are more prone to commit fraud when they feel the competitor at their heels.

The waste from power plants is essentially what is left over when you burn coal. And as we all know, coal is a relatively dirty mineral.

Typically, people who exercise start eating better and becoming more productive at work. They smoke less and show more patience with colleagues and family. They use their credit cards less frequently and say they feel less stressed. It's not completely clear why. But for many people, exercise is a keystone habit that triggers widespread change.