Step 15 ~ On Chastity
¶53. When we are lying in bed, let us be especially sober and vigilant, because then our mind struggles with the demons without our body, and if it is sensual, it readily becomes a traitor.
¶54. Always let the remembrance of death and the Prayer of Jesus, being of single phrase, go to sleep with you and get up with you; for you will find nothing to equal these aids during sleep.