Above all, unmarried people, monks, or celibate priests, easily yield to the illusion that the source of their unhappiness is their unmarried state, their lack of truly human attachment.  But does a married person in such a situation not experience exactly the same in his relationship to the wedded partner, or indeed to any person in his relationships with them?  Deception and self-delusion have led many astray while the true character of their depression remains hidden.  They do not understand that they are entangled in the most unusual struggle with themselves and that their opponent is neither “the institution,” nor “a vow,” nor the marriage partner or colleagues at work or whatever, but their own wounded “I.”

Despondency: The Spiritual Teaching of Evagrius of Pontus
Gabriel Bunge