Just One Heart is a compassionate and insightful guide to achieving better health, healing, and happiness by caring for both the physical and emotional heart. Written by cardiologist Dr. Jonathan Fisher, the book blends medical expertise with mindfulness, lifestyle changes, and emotional awareness. It explains how stress, trauma, and mental health directly impact heart health and overall well-being. Through real-life stories, practical advice, and holistic approaches, readers learn how to nurture their heart beyond diet and exercise alone. The book encourages self-compassion, balance, and meaningful connections as essential parts of healing. Thoughtful, accessible, and empowering, this guide is ideal for anyone looking to improve heart health while living a calmer, more fulfilled life.