“Every habit, no matter its complexity, is malleable......however, to modify a habit, you must decide to change it. You must consciously accept the hard work of identifying the cues and rewards that drive the habits' routines, and find alternatives. You must know you have control and be self-conscious enough to use it.”

“The problem is that your brain can't tell the difference between bad and good habits, and so if you have a bad one, it's always lurking there, waiting for the right cues and rewards.”

“The Golden Rule of Habit Change: You can't extinguish a bad habit, you can only change it.”

“Once you know a habit exists, you have the responsibility to change it . . . others have done so . . . That, in some ways, is the point of this book. Perhaps a sleep-walking murderer can plausibly argue that he wasn’t aware of his habit, and so he doesn’t bear responsibility for his crime, but almost all of the other patterns that exist in most people’s lives — how we eat and sleep and talk to our kids, how we unthinkingly spend our time, attention and money — those are habits that we know exist. And once you understand that habits can change, you have the freedom and the responsibility to remake them. Once you understand that habits can be rebuilt, the power of habit becomes easier to grasp and the only option left is to get to work.”

“This is the real power of habit: the insight that your habits are what you choose them to be.”

“Change might not be fast and it isn't always easy. But with time and effort, almost any habit can be reshaped.”

“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. Exercise is a keystone habit that triggers widespread change.”