Well, I really think it depends on what your parish prefers. The one I had to memorize (but can only remember the first line) starts off: O, my God, I am heartily sorry for having offended Thee…

There are other versions out there with more modern-day English as well. I think whichever one is comfortable for you. Obviously you don’t want to pick one that looks way different from the majority of the others you have read.

You could always just use the one on this page (scroll down): http://www.aboutcatholics.com/prayer/co … c_prayers/