One Way to Remember Your Guardian Angel
Russian Icon of a Guardian Angel, taken from St. George Books
Holy Angel, overseer of my wretched soul and miserable life, do not abandon me a sinner, do not desert me because of my inconstancy; leave no place for the evil demon to obtain dominion over me by gaining control of this mortal body; strengthen my wretched and feeble hand, and guide me into the way of salvation. Yea, O Holy Angel of God, guardian and protector of my wretched soul and body, pardon me all things whereby I have saddened thee all the days of my life, and whatever sins I have committed this day; shelter me in the coming night and protect me from every abuse of the adversary, that I may not anger my God by any sin; and intercede for me to the Lord, to strengthen me in His fear, and show me to be a worthy servant of His goodness. Amen.
[Taken from Free Republic Religion Forum: The 12 most important things to know about angels.]