I am just a lay Catholic, and not a good one at that. I am very new even to the idea of mortification. But here are the reasons that I am looking in to select versions of it. I will also tell you what I am looking into doing.
Remember the Bible in Mathew Ch 5 Vs 30 where it says the following: “And if thy right hand causeth thee to stumble, cut it off, and cast it from thee: for it is profitable for thee that one of thy members should perish, and not thy whole body go into hell.”
For me this is the primary reason that I am considering mortification. Sin is what separates us from God. Sin is more serious than people today want to admit, much more serious. If something is separating you from God then you need to get rid of whatever is separating you from God.
For me, I forget God. For a time I read books like “The Imitation of Christ” and for a while I focus on being a better Catholic Christian, but then something distracts me and I again fall into the temptations and desires of life. Overeating, getting angry with others and their sins, pride, these are just some of my common failings which are many. I need something to help me focus more on the lord. I need something that reminds me to always keep my eyes and focus on Christ. Do you remember Peter walking on the water? Here is a quote from the bible I found online:
“Lord, if it’s you,” Peter replied, “tell me to come to you on the water.”
29 “Come,” he said.
Then Peter got down out of the boat, walked on the water and came toward Jesus. 30 But when he saw the wind, he was afraid and, beginning to sink, cried out, “Lord, save me!”
31 Immediately Jesus reached out his hand and caught him. “You of little faith,” he said, “why did you doubt?”
The reason that Peter began to sink was because he took his focus off of the Lord and onto the storm and focused on his fear instead of his faith. This is what happens when we forget the Lord and focus on the daily happenings, problems, and trials of life. It is because of this that I am looking into things that cause me discomfort in a way that reminds me of Christ and God. I was looking for a Crucifix to wear that has the nails going through the cross and poking out slightly in the back side, that way I would always feels the crucifix that I was wearing in an irritating, slightly painful way, but I cannot find one. For now, I am looking for a ring and other more visible jewelry and items that will remind me more constantly about God. Christian clothing is also something that I am looking into.
In short, mortification, even in small ways, can bring me closer to God. I know that I need something more because right now, I am only casually Christian and I need more constant reminders of the gravity of sin and the reality of death and judgement.