The spiritual journey requires accompaniment and discernment. In Eugene’s case the spiritual journey seemed to be leading him to the priesthood – a discernment in which he searched for help:
having consulted at Paris one of the best directors existing in the world.
He is referring here to the Sulpician Father Antoine Duclaux, whom he consulted by letter and who not only encouraged Eugene to become a priest, but guided him as his spiritual director in all his major decisions for the next 20 years. (cf http://www.omiworld.org/en/dictionary/historical-dictionary_vol-1_d/700/duclaux-antoine-du-puget-sulpician/ )
The second person he turned to for help in his discernment was Father Augustine Magy, who had been a Jesuit priest until their suppression:
I went to Marseilles for the express purpose of baring my soul to a saintly and experienced man
Letter to his mother, 23-24 March 1809, EO XIV n 49
“Our God is greater than our own heart and mind, and too easily we are tempted to make our heart’s desires and our mind’s speculations into the will of God. Therefore, we need a guide, a director, a counselor who helps us to distinguish between the voice of God and all other voices coming from our own confusion or from dark powers far beyond our control.” Henri Nouwen