The Most High has commanded His angels to watch over you; they shall guard you in all your ways; they will bear you up in their hands, lest your foot dash against a stone. (Psalm 90[91]:11-12)
I. Admire the goodness of God, who has appointed a prince of His court to watch over your conduct. Your guardian angel remains at your side day and night; he defends you against the devil and temptations; he inspires holy thoughts; he turns you away from evil; he intercedes for you before God. Thank God for the kindness He shows you in giving you so faithful and charitable a guide, and see in this grace a proof of the esteem He has for your soul. Thank your guardian angel for the services he renders you; ask him to continue them until your death.
II. Show profound respect for your angel, and express it each day with some prayer. Do not mistreat or scandalize anyone; remember the word of the Lord forbidding you to scandalize the little ones, for their angels always behold the face of their Father. These angels will avenge the harm you do to those under their care. If you labor to convert some sinner, beg his guardian angel to assist you. Honor your guardian angel. Do not do in his presence what you would not do before a respectable person. (St. Bernard)
III. Consider your guardian angel as the best friend you have in this world. He is faithful; he will not abandon you in your needs. He is infinitely enlightened—consult him in your doubts: he will not deceive you. He is powerful to help you: he has more power, more intelligence, and more strength than the men in whom you place your trust. Listen to what he inspires in you. Ah! If you had but a little faith, you would fear nothing, knowing that your angel is with you.
PRAYER: O God, who in ineffable providence deign to send Your holy angels to guard us, grant to our humble supplications the grace of being sustained by their protection, and the joy of being in eternity the companions of their glory. Through Jesus Christ Our Lord. Amen.