This article considers how using a multifaceted developmental framework can help inform the analyst’s clinical choices throughout the course of treatment. The developmental pathway toward achieving a balance between a stable sense of autonomy and individuality and a capacity for relatedness and mutuality is discussed. The building blocks of development—basic trust, the self-other boundary, object constancy, and self-esteem—are outlined, along with ways to clinically assess developmental levels. Clinical material is presented to help illustrate how a sensitivity to the array of developmental data can help the analyst flexibly adapt to the patient’s changing needs and capacities.