How We Feel, Full Stack Experience Architectures explores how experiences can be intentionally designed to shape emotion, memory, and meaning. The talk explores that an experience is not a single moment, space, or interaction, but a holistic system that unfolds across time, before, during, and after engagement. By blending neuroaesthetic principles with full stack experience design, the work examines how sensory input, spatial design, narrative, and technology influence both physiological and emotional responses. We'll look at experience design as an act of emotional architecture, where every layer, from anticipation and arrival to interaction and reflection, contributes to how people feel and what they remember. Immersive technologies are treated not as spectacle, but as tools for deepening connection, empathy, and presence. Ultimately, the talk explores experience design as a transformative practice, moving beyond memorability toward lasting impact, design that subtly alters perception, behavior, and the way individuals carry an experience with them long after it ends.