“Burnout” is a particularly modern affliction, feeling simultaneously overwhelmed and paralyzed. I’ve found it’s best to think of burnout not as a disease but as a symptom, with many different etiologies. The big three: permanent on-call, broken steering, and mission doubt.
I meet a lot of people searching for something (career, relationship, etc). And yet, when it’s put in front of them, they won’t pursue it because they fear pain (getting hurt, failure, etc.). So they unconsciously (and expensively) trade self protection for misery.