37 "The thing that keeps us priests from gaining sanctity"—the Cure of Ars used to say— "is thoughtlessness. It annoys us to turn our minds away from external affairs; we don't know what we really ought to do. What we need is deep reflection, together with prayer and an intimate union with God." The testimony of his life makes it clear that he always remained devoted to his prayers and that not even the duty of hearing confessions or any other pastoral office could cause him to neglect them. "Even in the midst of tremendous labors, he never let up on his conversation with God." (48)
Source: Sacerdotii Nostri Primordia (Vatican.va)