For decades, Cubans have cultivated a well-earned reputation for weathering systemic hardship with quiet resilience and creative resourcefulness — a point of national pride that has carried communities through decades of challenges. But as the island enters its latest phase of prolonged crisis, fueled by a U.S. energy blockade that has sent living conditions plummeting since January, that long-held fortitude is coming at a devastating psychological cost that is leaving millions in a state of persistent exhaustion and uncertainty.