Building on previous studies that link the gap between ideals and reality to unhappiness, this chapter deepens the analysis by tracing a cognitive chain in everyday life. Fast thinking (bounded rationality, heuristics) narrows attention to a few facets of an object, producing a nonresource trap (misjudging something as “unusable”) that hardens into a negative-emotion trap (frustration, helplessness, demotivation). Drawing on examples in Part 1, the chapter shows how subjective cognition and overlooked resource potential make problems feel pervasive and permanent. The chapter then positions a psychology-to-action pathway—anchored by a visual cue and the R2–R4 logic—as a conceptual bridge from appraisal to action, clarifying why some people remain active and grow happier under the same constraints that paralyze others, while leaving practical procedures to Chapter 8 .