Earned Secure Attachment designates a state of mind with respect to attachment — assessed principally through the Adult Attachment Interview (AAI) — in which an individual achieves secure/autonomous functioning despite a documented history of insecure, neglectful, or abusive childhood experience. The concept thus stands at the intersection of developmental plasticity and therapeutic possibility, and it is Siegel who gives it its most sustained treatment in the depth-psychology literature, drawing on the foundational classification work of Main, Hesse, and Goldwyn. The critical empirical finding is that ‘earned’ and ‘continuous’ secure/autonomous parents produce attachment outcomes in their children that are, by current measures, indistinguishable — a datum that carries enormous clinical weight, implying that coherent autobiographical narrative and reflective capacity can functionally override early adversity. The mechanism most frequently proposed is relational: a significant emotional relationship with a close friend, romantic partner, or therapist provides the corrective attunement through which insecure internal working models are reorganized. Holmes, writing in the Bowlby tradition, frames the supporting social environment and autobiographical competence as key mediators. The concept thus occupies a pivotal position between neuroscientific accounts of neuroplasticity, attachment classification research, and clinical theories of therapeutic action — serving as the empirical warrant for the claim that psychotherapy can, in principle, produce genuinely new attachment organization.