Then Jesus told his disciples, “If any man would come after me, let him deny himself and take up his cross and follow me.Matthew 16:24
“The way of perfection passes by way of the Cross. There is no holiness without renunciation and spiritual battle. Spiritual progress entails the ascesis (intense self-discipline) and mortification that gradually lead to living in the peace and joy of the Beatitudes: ‘He who climbs never stops going from beginning to beginning, through beginnings that have no end. He never stops desiring what he already knows.'” CCC 2015
Mortification is “the deliberate restraint that one places on natural impulses in order to make them increasingly subject to sanctification through obedience to reason illumined by faith.”4 St. Louis de Montfort speaks of self-denial, carrying the Cross, disciplining by austerities inherent in one’s state of life or even self-imposed renunciation of the world, worldly goods, and worldly company.