561-570, Devotions.

Saint Teresa points us to prayer life of Saint Joseph, have confidence in your guardian angel, win over guardian angel of person you want in your apostolate, remember the Angels all around to avoid foolish things, don't be amazed by their obvious favors, still many occasions of going astray, call upon him at moment of trial to protect you from devil, languish with love for them, they defend it from profanation, even early Christians were on intimate terms with their guardian angels. --- from The Way (1934), by Josemaría Escrivá