Urgent calls by the younger generation and the scientific community to approach sustainability only seem to scratch the
surface of individuals’ awareness while ecological destruction moves forward. In this regard, current dominant mindsets
claiming a human–nature separation appear to hamper change by not granting nature dignity and her own voice. Therefore,
the scientific community is inviting us to embrace Indigenous ontologies and an overall spiritual connectedness with nature
in our lives. Yet, in times of crisis, it is unclear how individuals can overcome prevailing mind-action gaps—and instead
turn towards sustainable caring human–nature relationships. Against this background, this conceptual paper elaborates, in a first step, individual human–nature resonance as a relational integrative framework to study psychological transformation processes and their supporting capabilities. In a second step, a ritual-based intervention is elaborated to nurture the quality of this relationship between human and nonhuman nature which is experientially enriched with insights from psychotherapy. Transdisciplinary research in the form of self-experience completes the research process. Eventually, we plead for openness in favor of adopting “lived wholeness” as a solution for sustainability transformations—of ourselves, science, and our relationship with nonhuman nature.