What is most often the reason for the fragility of success?

Success cannot last forever. This is a rather short term concept.

Success is very difficult to maintain, so many people lose it when they barely feel it.

The fact is that in a state of euphoria, a person very quickly relaxes. He thinks he is knee-deep in the sea. Success is so dizzy that a person simply stops doing anything.

Or he simply cannot stand the moral stress. The point is that successful people are often envied. That is why many shy away from the rays of glory, just not to become a target, to avoid stabbing criticism and sidelong glances.