Person-centered spiritual maturation has conceptual and historical roots in my work with Carl Rogers, as a staff member of the Person-Centered Approach Project. It is a person-specific process of psychospiritual development that can be mentored in communities where belief systems and cultural identities are diverse. It enables individuals to deepen engagement with contemplative practices from spiritual traditions that hold personal salience, while building inclusive, respectful communities. This multidimensional model emerges from three decades mentoring person-centered spiritual maturation with university students in the service of their growth as professionals and socially responsible citizens. Growth includes (a) behavioral self-regulation through mindfulness; (b) cognitive understanding of humanity’s chain of pain that supports social justice; (c) social–emotional development that repairs broken attachment templates and promotes compassionate attunement to self and others; (d) contemplative practice that strengthens secure existential attachment and taps the human capacity for unconditional altruistic love; and (e) formation of a resilient worldview, confidence in life and self, that helps people confront life’s existential, interpersonal, and intergroup tensions with sufficient internal composure to derive maturational growth. This model provides a cohesive multidimensional explanation of person-centered spiritual maturation that highlights its prosocial value, integrates relevant neuroscience, and offers researchers a conceptual framework for future investigations.