This paper developed the ecological dimension of the pattern theory of selflessness (PTSL), reconceptualizing its six transformations (T1–T6) as organism-environment enactments. Method: Drawing on ecological psychology and enactivism, it argues that ecological processes are constitutive rather than merely causal contributors to self-pattern transformation: affordances, affective scaffoldings, and social ecologies are not contextual backdrops but co-creators of each transformation. The argument proceeds through conceptual analysis, integrating a relational account of affordances and the distinction between the landscape and the field of relevant affordances with the PTSL’s six-transformation model, and drawing on canonical Buddhist sources and ethnographic research on Thai, Burmese, and secular practice contexts. Results: Each transformation is shown to involve a distinct mode of ecological participation: ethical consolidation (T1) restructures what solicits the practitioner; concentration (T2) requires the material engineering of specific ecologies of attention; mindful awareness (T3) demands generalization across diverse contexts; self-deconstruction (T4) depends on withdrawing the ecological scaffolding that sustains ordinary self-boundaries; flexibility (T5) entails reconstituting organism-environment coupling across qualitatively different conditions; and self-liberation (T6) involves an irreversible reorientation of that coupling rather than transcendence of ecology. Conclusions: Taking the organism-environment system as the unit of analysis specifies testable empirical signatures, including cross-contextual assessment and neurophenomenological investigation of retreat-to-daily-life transitions, that would distinguish the constitutive hypothesis from causal alternatives.