Prayer Before and After Mass

I found a few more nice prayers in the Catholic prayer book I recently got and planned on sharing. Here they are. If you like any of them let me know.
Prayer of Saint Thomas Aquinas (Before Mass):
Almighty and eternal God, I am about to approach the sacrament of your only-begotten Son, our Lord Jesus Christ. Sick, I draw near to the physician of life; unclean, to the fountain of mercy; blind, to the light of eternal brightness; poor and needy, to the Lord of heaven and earth. I ask you in the abundance of your goodness to heal my ills. Cleanse my sins, enlighten my blindness, enrich my poverty, and clothe my nakedness. Make me ready to receive the Bread of angels with such reverence and humility, such sorrow and devotion, such purity and faith, such purpose and intention as shall best lead to my salvation. Dear God, grant that I may so receive the Body of your only-begotten Son, that I may be worthy to be incorporated into his Mystical Body and counted among his members. O most loving Father, let me see your beloved Son, whom I now intend to receive, veiled indeed in this life, revealed throughout eternity face to face. He reigns and lives with you in the unity of the Holy Spirit, God, forever and ever. Amen
Thanksgiving of Baldwin of Canterbury (After Mass):
How great is your goodness, Lord, who does not shrink from letting your servant place you upon his heart! How great my own worth, since you have chosen me to have part in yours, to have you abiding in me, to love you as you deserve, above, myself.
Lord, take from me this hard heart, and give me a new, clean heart of flesh and blood. You who make my heart pure, take possession of mine and make it your home. Hold it and fill it, you who are higher than my topmost height, more inward than my inward being. You, the seal of holiness, beauty of all beauties, engrave on my heart your image and the imprint of your mercy. Be, O God, my eternal love and my inheritance. Amen.
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