Individuation as a vocation, as "addressed by a voice":
"What is it, in the end, that induces a man to go his own way and to rise out of unconscious identity with the mass as out of a swathing mist? Not necessity, for necessity comes to many, and they all take refuge in convention. Not moral decision, for nine times out of ten we decide for convention likewise.
What is it, then, that inexorably tips the scales in favour of the extra-ordinary? It is what is commonly called vocation: an irrational factor that destines a man to emancipate himself from the herd and from it’s well-worn paths. True personality is always a vocation and puts its trust in it as God, despite its being, as the ordinary man would say, only a personal feeling. But vocation acts like a law of God from which there is no escape. The fact that many a man who goes his own way ends in ruin means nothing to one who has a vocation. He must obey his own law, as if it were a daemon whispering to him of new and wonderful paths. Anyone with a vocation hears the voice of the inner man: he is called….
The original meaning of “to have a vocation” is “to be addressed by a voice.” The clearest examples of this are to be found in the avowels of the Old Testament prophets. That it is not just a quaint old-fashioned way of speaking is proved by the confessions of historical personalities such as Goethe and Napoleon, to mention only two familiar examples, who made no secret of their feeling of vocation." ~Carl Jung, Collected Works Volume 17, The Development of the Personality.