In the very beginning of our renunciation, it is certainly with labor and grief that we practice the virtues. But when we have made progress in them, we no longer feel sorrow, or we feel little sorrow.
But as soon as our mortal mind is consumed, and mastered by our alacrity, we practice them with all joy and eagerness, with love and with divine fire.
We just need to be constant.
Based on St. John of the Ladder