When Jesus told the apostles at the Last Supper that the Holy Spirit would instruct them in His Word and be their advocate and comforter, He meant for His Spirit to help us as well. The prayer itself follows:
Come, Holy Spirit, fill the hearts of Your faithful
And kindle in them the fire of Your love
V: Send forth Your Spirit and they shall be created
R: And You shall renew the face of the earth
Let us Pray:
O God, Who instructed the hearts of the faithful by the light of the Holy Spirit, Grant us in the same Spirit to be truly wise and ever rejoice in His consolation. Through Christ, our Lord. Amen