Heather Turgeon, MFT, is a sleep specialist and coauthor of the parenting books, The Happy Sleeper: The science-backed guide to helping your baby get a full night’s sleep and Now Say This: The right words to solve every parenting dilemma. Her writing has appeared in The New York Times and The Washington Post, among others. To learn more about The Happy Sleeper’s online sleep classes and consultations, visit www.thehappysleeper.com.