The stories are out there: the smart co-workers who get in their own way instead of getting ahead.
CISOs know them, too. One remembers a brilliant employee who liked to remind others how smart she was and how she deserved way more money than she was making. Another recalls a talented staffer who did exactly what was required, but nothing more. Neither made it very far, as their bosses finally had enough of their drag on morale and decided to let them go.