"Healing: red flags and green lights" teaches the importance of understanding our feelings after toxic relationships. It highlights the signs of unhealthy behavior (red flags) that we must avoid and the signs of healthy relationships (green lights) that we must look for. The book offers strategies to help us heal and grow, such as establishing limits and practicing self-care. Recognizing these emotional health indicators is crucial to build better relationships and find happiness after trauma. Healing is a trip to understanding and self-esteem.