Psychological Consequences of the Possible Nonexistence of Time: From the Calendar Arrow to the Individual Arrow of Belonging

This article examines the psychological consequences that follow if time is not understood as a fundamental substance or as an independent container within which life occurs. Drawing on Time, Life, and Death: Belonging and the Arrow of Time, it argues that the possible nonexistence of independent time does not eliminate change, duration, aging, causality, or death; it changes their interpretation. Calendar time measures duration through standardized physical recurrences, but it does not constitute the transformations it measures. An individual life can therefore be understood not primarily as a diminishing quantity moving along an external temporal line, but as an arrow of transformation: a diachronic trajectory of belonging continuously constituted through synchronic relations. The article introduces existential time as the lived density, breadth, openness, significance, and relational extension generated through meaningful participation in existence. Existential time can expand even as remaining calendar time contracts. Its enlargement depends on three irreducible but interacting pathways of belonging: love or affective significance; social significance through recognition, contribution, and participation; and existential significance through meaning, creation, contemplation, bodily care, physical activity, responsible eating, relationships with other species, and engagement with material and biological nature. Research on attachment, social connection, purpose in life, mindfulness, natural environments, companion animals, exercise, diet, stress regulation, immune processes, healthspan, and mortality provides empirical support for these pathways while also establishing the limits of causal inference. The article distinguishes the direct enlargement of existential time from the probabilistic possibility that richer belonging may also contribute indirectly to longevity. It concludes by applying the six-step therapeutic architecture of the Psychology of Belonging—body, instinct, belonging, emotion, awareness, and mentalization—to temporal anxiety. The resulting framework proposes a psychology of finite life centered neither on denying death nor on merely maximizing years, but on enlarging existential time through embodied, plural, viable, and necessarily imperfect forms of belonging.