What characteristic of a job path suggests it is unsustainable, regardless of external success?

Answer

The daily work requires acting in ways that contradict one's ethical center.

A career path cannot be sustained if the daily activities force behavior that contradicts deeply held personal values or ethical beliefs, inevitably leading to dissatisfaction and fatigue.

What characteristic of a job path suggests it is unsustainable, regardless of external success?
jobcareerguidancesatisfaction