The Jonah complex is the fear of success or the fear of being one's best. This fear prevents self-actualization, or the realization of one's own potential. It is the fear of one's own greatness, the evasion of one's destiny, or the avoidance of exercising one's talents. As the fear of achieving a personal worst may serve to motivate personal growth, likewise the fear of achieving a personal best may hinder achievement.
The Jonah complex is evident in neurotic people.