Dr. Miriam Figueroa introduces the concept of spirituality and its connection to emotional health based on the teachings of Peter Scazzero's book, "Spirituality Emotionally Healthy." She emphasizes that spiritual maturity is impossible without emotional maturity. In this course, Dr. Figueroa discusses the importance of guarding the heart, drawing a parallel between physical and spiritual heart health. The heart is described as the center of spiritual activity and all operations of human life, encompassing the mind, emotions, will, and inner being. Throughout this course, Dr. Figueroa emphasizes the need for vigilance and transformation of the heart, as it influences behavior, attitudes, and responses.