CATECHISM OF THE CATHOLIC CHURCH
SECOND EDITION

Paragraphs 2647–2651

2647 Prayer of intercession consists in asking on behalf of another. It knows no boundaries and extends to one's enemies.
2648 Every joy and suffering, every event and need can become the matter for thanksgiving which, sharing in that of Christ, should fill one's whole life: "Give thanks in all circumstances" (1 Thess 5:18).
2649 Prayer of praise is entirely disinterested and rises to God, lauds him, and gives him glory for his own sake, quite beyond what he has done, but simply because HE IS.
2650 Prayer cannot be reduced to the spontaneous outpouring of interior impulse: in order to pray, one must have the will to pray. Nor is it enough to know what the Scriptures reveal about prayer: one must also learn how to pray. Through a living transmission (Sacred Tradition) within "the believing and praying Church," the Holy Spirit teaches the children of God how to pray.
2651 The tradition of Christian prayer is one of the ways in which the tradition of faith takes shape and grows, especially through the contemplation and study of believers who treasure in their hearts the events and words of the economy of salvation, and through their profound grasp of the spiritual realities they experience.