This work is a direct continuation of Resonant Coherence Field Theory (RCFT) and extends itscore questions into the domain of living persistence. Rather than proposing a new definition of life, the text develops a constraint-based lensfocused on the physical conditions under which localized organization can persist over time.Life is examined as a regime in which interaction energy remains locally organized despitecontinuous disturbance, requiring boundaries, maintenance, selective exchange, andeventually reproduction. The work emphasizes failure modes, energetic cost, and environmental limits, showing whypersistent structure is fragile and rare across scales. Biological phenomena such asboundaries, liquid interiors, reproduction, and complexity are treated as consequences ofphysical constraint rather than as exceptions to physical law. No new forces or entities are proposed. The contribution lies in reorganizing familiarphenomena around closure, maintenance, and cost, offering a lens that clarifies why similarpatterns recur across physics and biology and why persistence breaks down in predictableways.