Suitable sayings from the Divine Scriptures, if said aloud or merely repeated mentally, have a wonderful power for impressing in our mind the image of the virtue we seek and for arousing a longing for it in the heart. And how great is the help received from both these by a man who strives to attain virtue! So find in the Scriptures appropriate texts concerning the virtue you seek and learn them by heart, so as always to have them ready at hand. Repeat them mentally as often as possible, especially when the opposite passion begins to move in you.
Book: Unseen Warfare
(For a partial list of the virtues, see Col 3:12, 13 and Gal 5:22, 23.)