This book presents a structured and research-informed approach to helping infants and young children develop healthy sleep habits from birth through five years of age. It explains the foundations of sleep science, circadian rhythms, sleep cycles, feeding patterns, and developmental milestones, while addressing common causes of night awakenings, short naps, bedtime resistance, and sleep regressions. The guide outlines age-specific sleep needs, safe sleep environment recommendations, and practical routines designed to support consolidated nighttime sleep and restorative daytime naps. The content is intended for expectant parents, new parents, and caregivers seeking a clear framework for understanding and improving a child’s sleep. It combines developmental psychology, behavioral principles, and step-by-step sleep coaching methods, including tools for selecting an approach aligned with family values and a child’s temperament. With practical plans, troubleshooting strategies, sample bedtime routines, nap schedules, and printable planning forms, the book offers a comprehensive and structured system focused on consistency, sleep safety, and long-term healthy sleep patterns.