A powerful, successful person is only as good as their confidence in their decisions regardless of the result.

Then when as right as they thought they were is as wrong as they turn out to be, the doubt they feel can metastasize like cancer through their confidence.  When they lose that confidence, they can no longer make decisions.  And when they can no longer make decisions their days as a powerful, successful person are over.

That is why such people do everything they can to avoiding getting that they just don't get it.