I searched for a thread about the Jesus Prayer, but the results were not what I was looking for. Does anyone know if there is already a thread for this? The Jesus Prayer "Lord Jesus Christ, Son of God, have mercy on me, a sinner" is repeated over and over several times a day until it just kind of becomes constant backdrop in your mind, helping you to be more mindful of God in you daily life. I have heard some Catholics as well as Orthodox practice this, and that it is a great help in advancing spiritually. Is there any reason a Catholic shouldn't practice this? Thanks in advance.