Would it be fair to say that you haven't actually read much real Catholic devotional literature? You might try starting with "Story of a Soul" by St. Therese of Lisieux and the "Imitation of Christ" by Thomas a Kempis.
I’ve witnessed enough threads on this topic over the years to understand the Roman Catholic layman’s understanding of penance vs. the Protestant understanding of repentance to know that this statement is noteworthy, Campion. You likely do, too.