unbreakable heart, metaphorical concept, steel-reinforced, glowing, indestructible, emotional resilience, surrounded by protective barrier, floating, ethereal background, soft-focus, warm ambient lighting, close-up shot, detailed texture, emotional strength, serene expression, tranquil setting, resilience symbol, abstract representation, emotional armor, serene sky, conceptual art, resilience theme, emotional fortitude, 3/4 view, high-resolution, digital painting.