...THE POWER OF HABIT Duhi_9781400069286_2p_all_r1.j.indd i 10/17/11 12:01 PM Duhi_9781400069286_2p_all_r1.j.indd ii 10/17/11 12:01 PM HABIT W h y We D o W h a t We D o and How to Change It THE POWER OF CHARLES DUHIGG Random House e N e w Yo r k Duhi_9781400069286_2p_all_r1.j.indd iii 10/17/11 12:01 PM This is a work of nonfiction. Nonetheless, some names and personal characteristics of individuals or events have been changed in order to disguise identities. Any resulting resemblance to persons living or dead is entirely coincidental and unintentional. Copyright © 2012 by Charles Duhigg All rights reserved. Published in the United States by Random House, an imprint of The Random House Publishing Group, a division of Random House, Inc., New York. RANDOM HOUSE and colophon are registered trademarks of Random House, Inc. ISBN 978-1-4000-6928-6 eBook ISBN 978-0-679-60385-6 Printed in the United States of America on acid-free paper Illustrations by Anton Ioukhnovets www.atrandom.com 2 4 6 8 9 7 5 3 1 First Edition Book design by Liz Cosgrove Duhi_9781400069286_2p_all_r1.j.indd iv 10/17/11 12:01 PM To Oliver, John Harry, John and Doris, and, everlastingly, to Liz Duhi_9781400069286_2p_all_r1.j.indd v 10/17/11 12:01 PM Duhi_9781400069286_2p_all_r1.j.indd vi 10/17/11 12:01 PM CONTENTS PROLOGUE The Habit Cure GGG xi PA R T O N E The Habits of Individuals 1. THE HABIT LOOP How Habits Work 3 31 60 2. THE...
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