" For example, attachment can be understood as how parents have come to integrate their own inner self-awareness with their relationship with their children—honoring differences, cultivating compassionate linkages. An integrated relationship is a healthy relationship. Here is a fabulous finding verified by studies in neuroplasticity: How we learn to focus the mind can change the brain. If we learn the basic approach of linking differentiated parts of our lives—our nervous systems and our social connections with others—we can move internally and interpersonally toward integration and health. Lack of integration can help explain otherwise mysterious patterns underlying how some individuals become stuck in their growth and development. "

― Daniel J. Siegel , The Developing Mind: How Relationships and the Brain Interact to Shape Who We Are