"If any one is a worshiper of God and does his will, God listens to him." Such is the power of the Church's prayer in the name of her Lord, above all in the Eucharist. Her prayer is also a communion of intercession with the all-holy Mother of God and all the saints who have been pleasing to the Lord because they willed his will alone:
It would not be inconsistent with the truth to understand the words, "Thy will be done on earth as it is in heaven," to mean: "in the Church as in our Lord Jesus Christ himself"; or "in the Bride who has been betrothed, just as in the Bridegroom who has accomplished the will of the Father."
Source: Catechism of the Catholic Church (Vatican.va)