Almighty and merciful God, look favorably upon my prayer and free my heart from temptation to evil thoughts, that I may deserve to be accounted a worthy dwelling place of the Holy Spirit.
Shed upon my heart the brightness of Thy grace, that I may ever think thoughts worthy of Thy Divine Majesty and that are pleasing to Thee, and ever sincerely love Thee, through Christ our Lord.
Amen.
ENCYCLOPEDIA OF CATHOLIC NOVENA PRAYERS AND DEVOTIONS