Chapter 19 — Part II: The Sacraments — Penance
Section 162. It does not, however, always follow that they are painful or laborious to those who undergo them. The influence of habit, or the intensity of divine love, frequently renders the soul insensible to things the most difficult. Such works, however, do not therefore cease to be satisfactory. It is the privilege of the children of God to be so inflamed with His love, that while undergoing the most cruel tortures, they are either almost insensible to them, or bear them all with the greatest joy.