A prayer by St. Alphonsus Ligouri:

Most holy Mary, I know the graces which you have obtained for me, and I know the ingratitude which I have shown you. The ungrateful man is unworthy of favors, and yet, for all this, I will not distrust your mercy. O my great Advocate, have pity on me! You, Mary, are the stewardess of every grace which God vouchsafes to give us sinners, and, therefore, did He make you so mighty, rich, and kind, that you might assist us. I will that I may be saved: in your hands I place my eternal salvation, to you I consign my soul. I will to be associated with those who are your special servants: reject me not. You go up and down seeking the wretched, to console them. Cast not away, then, a wretched sinner who has recourse to you. Speak for me, Mary; your Son grants what you ask. Take me beneath your shelter, and it is enough for me; for, with you to guard me, I fear no ill, no, not even my sins, because you will obtain God’s pardon for them; no, nor yet evil spirits, because you are far mightier than Hell; no, nor my Judge Jesus Christ, for, at your prayer, He will lay aside His wrath. Protect me, then, my Mother; obtain for me pardon of my sins, a love of Jesus, holy perseverance, a good death, and Heaven. It is too true, that I do not merit these graces; yet do only ask them of our God and I shall obtain them. Pray, then, to Jesus for me. Mary, my Queen, in you I trust; in this trust I rest, I live; and with this trust I will that I may die. Such is my hope. Thus may it be! Amen.

For the First Saturday Devotions: go here.

For the Novena Prayer in preparation for Christmas: go here.