The Catechism of the Catholic Church states:
The Church invites the faithful to regular prayer: daily prayers, the Liturgy of the Hours, Sunday Eucharist, the feasts of the liturgical year. (CCC 2720)
The 3 Expressions of Prayer
1. Vocal Prayer
Through his Word, God speaks to man. By words, mental or vocal, our prayer takes flesh. Yet it is most important that the heart should be present to him to whom we are speaking in prayer: "Whether or not our prayer is heard depends not on the number of words, but on the fervor of our souls." (CCC 2700)
Vocal prayer is an essential element of the Christian life. To his disciples, drawn by their Master's silent prayer, Jesus teaches a vocal prayer, the Our Father. He not only prayed aloud the liturgical prayers of the synagogue but, as the Gospels show, he raised his voice to express his personal prayer, from exultant blessing of the Father to the agony of Gesthemani. (CCC 2701)
Because it is external and so thoroughly human, vocal prayer is the form of prayer most readily accessible to groups. Even interior prayer, however, cannot neglect vocal prayer. Prayer is internalized to the extent that we become aware of him "to whom we speak;" Thus vocal prayer becomes an initial form of contemplative prayer. (CCC 2704)
2. Meditation
Meditation is above all a quest. the mind seeks to understand the why and how of the Christian life, in order to adhere and respond to what the Lord is asking. the required attentiveness is difficult to sustain. We are usually helped by books, and Christians do not want for them: the Sacred Scriptures, particularly the Gospels, holy icons, liturgical texts of the day or season, writings of the spiritual fathers, works of spirituality, the great book of creation, and that of history the page on which the "today" of God is written. (CCC 2705)
To meditate on what we read helps us to make it our own by confronting it with ourselves. Here, another book is opened: the book of life. We pass from thoughts to reality. To the extent that we are humble and faithful, we discover in meditation the movements that stir the heart and we are able to discern them. It is a question of acting truthfully in order to come into the light: "Lord, what do you want me to do?" (CCC 2706)
There are as many and varied methods of meditation as there are spiritual masters. Christians owe it to themselves to develop the desire to meditate regularly, lest they come to resemble the three first kinds of soil in the parable of the sower.5 But a method is only a guide; the important thing is to advance, with the Holy Spirit, along the one way of prayer: Christ Jesus. (CCC 2707)
Meditation engages thought, imagination, emotion, and desire. This mobilization of faculties is necessary in order to deepen our convictions of faith, prompt the conversion of our heart, and strengthen our will to follow Christ. Christian prayer tries above all to meditate on the mysteries of Christ, as in lectio divina or the rosary. This form of prayerful reflection is of great value, but Christian prayer should go further: to the knowledge of the love of the Lord Jesus, to union with him. (CCC 2707)
3. Contemplative Prayer
Contemplative prayer is the prayer of the child of God, of the forgiven sinner who agrees to welcome the love by which he is loved and who wants to respond to it by loving even more. But he knows that the love he is returning is poured out by the Spirit in his heart, for everything is grace from God. Contemplative prayer is the poor and humble surrender to the loving will of the Father in ever deeper union with his beloved Son. (CCC 2712)
Contemplative prayer is the simplest expression of the mystery of prayer. It is a gift, a grace; it can be accepted only in humility and poverty. Contemplative prayer is a covenant relationship established by God within our hearts. Contemplative prayer is a communion in which the Holy Trinity conforms man, the image of God, "to his likeness." (CCC 2713)
Contemplative prayer is also the pre-eminently intense time of prayer. In it the Father strengthens our inner being with power through his Spirit "that Christ may dwell in (our) hearts through faith" and we may be "grounded in love." (CCC 2714)
Contemplative prayer is hearing the Word of God. Far from being passive, such attentiveness is the obedience of faith, the unconditional acceptance of a servant, and the loving commitment of a child. It participates in the "Yes" of the Son become servant and the Fiat of God's lowly handmaid. (CCC 2716)
Contemplative prayer is silence, the "symbol of the world to come" or "silent love." Words in this kind of prayer are not speeches; they are like kindling that feeds the fire of love. In this silence, unbearable to the "outer" man, the Father speaks to us his incarnate Word, who suffered, died, and rose; in this silence the Spirit of adoption enables us to share in the prayer of Jesus. (CCC 2717)
Contemplative prayer is a union with the prayer of Christ insofar as it makes us participate in his mystery. the mystery of Christ is celebrated by the Church in the Eucharist, and the Holy Spirit makes it come alive in contemplative prayer so that our charity will manifest it in our acts. (CCC 2717)
Contemplative prayer is a communion of love bearing Life for the multitude, to the extent that it consents to abide in the night of faith. the Paschal night of the Resurrection passes through the night of the agony and the tomb - the three intense moments of the Hour of Jesus which his Spirit (and not "the flesh [which] is weak") brings to life in prayer. We must be willing to "keep watch with (him) one hour." (CCC 2718)