If a man does not tell everything to his spiritual father, then his path is crooked and does not lead to the Kingdom of Heaven. But the path of one who tells everything leads directly to the Kingdom of Heaven.
Saint Silouan the Athonite
Whoever has become a servant of the Lord fears only his Master. But whoever is without the fear of God is often afraid of his own shadow. Fearfulness is the daughter of unbelief. A proud soul is the slave of fear; hoping in itself, in comes to such a state that it is startled by a small noise, and is afraid of the dark.
(St. John of the Ladder, The Ladder, 21.11,1,4)