How do you develop more secure attachment as an adult?

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Developing secure attachment as an adult requires corrective relational experience, increased reflective functioning (the capacity to understand one's own and others' mental states), and nervous system work that builds tolerance for intimacy. Dr. Mary Main's research on earned security demonstrates this is genuinely achievable at any age. Dr. Mary Main at UC Berkeley identified that earned secure adults, people who achieved security despite insecure childhoods, showed one distinctive feature: the ability to tell a coherent, integrated story about their childhood including its difficult parts. They could acknowledge what was hard, make sense of why their parents behaved as they did, and reflect on how their history shaped them without being overwhelmed or dismissive. This reflective coherence appears to reorganize the attachment system. Therapeutic relationships provide corrective relational experience. Dr. Peter Fonagy at University College London demonstrated that therapy is particularly effective at developing mentalization, or reflective functioning: the capacity to think about mental states in oneself and others. High mentalization is strongly associated with secure attachment and the capacity to use close relationships as regulatory environments. In romantic relationships, research by Dr. Brooke Feeney at Carnegie Mellon University shows that responsive partner behavior over time, consistently meeting bids for emotional connection, reliably showing up during vulnerability, and offering effective comfort during distress, gradually shifts the nervous system's relational expectations. The internal working model updates through accumulated evidence, but only when evidence is consistent enough and experienced over sufficient time. Individual practices supporting attachment security development include: journaling about early relational history with the goal of making sense rather than blame; explicit practice of asking for help in low-stakes situations; therapeutic work to process specific developmental wounds; and developing capacity to tolerate the discomfort of emotional closeness without immediately retreating into old defensive patterns.