Here are a couple of prayers to help strive towards the virtues and chastity:
Mary, Mother most pure, and Joseph, chaste guardian of the Virgin, to you I entrust the purity of my soul and body. I beg you to plead with God for me that I may never for the remainder of my life soil my soul by any sin of impurity…
Lord, inflame our hearts and our inmost beings with the fire of Your Holy Spirit, that we may serve You with chaste bodies and pure minds. Through Christ our Lord. Amen
My God, You have given me a body to keep pure and clean and healthy for Your service and my eternal happiness. Forgive me for all my unfaithfulness in this great responsibility…
These prayers in their entirety can be found at: