People in prolonged depression appear to have strong stress resilience, not because they are more resilient, but because they have become accustomed to enduring. When pain becomes the norm and their emotional threshold is raised, they no longer collapse easily, and rarely complain or display emotions. Others see stability and silence, and thus mistake it for strength. But true stress resilience doesn't mean feeling no pressure; healthy stress resilience is like a spring—when pressed, it can bounce back. Depression-type resilience is like an iron block—very stable on the surface, but already rusting inside.