Stress and stressors are separate problems requiring separate solutions

The authors' foundational distinction is between a stressor — the actual external trigger, like a demanding boss or a sick child — and stress, the physiological cascade the body launches in response, involving hormones, muscle tension, and heightened alertness that don't automatically switch off once the triggering situation resolves. Most advice about managing stress focuses exclusively on eliminating stressors, which is useful but incomplete, because the body's activated stress response can persist even after the stressor itself is gone.

This matters practically because someone can remove every external stressor from their life and still feel wired, exhausted, or anxious, simply because the physiological stress response was never explicitly signaled to conclude. The authors argue that addressing only the external situation while ignoring the internal physiological state leaves a large piece of the burnout puzzle untouched.

Takeaway: solving the problem that caused your stress doesn't automatically resolve the stress response itself — the two require separate, deliberate attention.