The fear of being full of life is known as the “Jonah complex”. From Wikipedia: The Jonah complex is the fear of success that prevents self-realization, or the realization of one’s potential. It is the fear of one’s greatness, evading one’s fate, or avoiding the realization of one’s talents.

The Fear of Being Fully Alive is known as The Jonah complex. From Wikipedia: The Jonah complex is the fear of success which prevents self-actualization, or the realization of one’s potential. It is the fear of one’s own greatness, the evasion of one’s destiny, or the avoidance of exercising one’s talents.