As Catholics we meditate and engage in mental prayer to be able have an intimate conversation and relationship with God.
God is love, and the embodiment of truth.
To know God is to know what love is and to understand truth. The more you know who God is and the better relationship you have with Him, the better you know yourself as you are made in His image and likeness. Mental prayer is about growing in knowledge and admiration of God and in virtue.
Meditation engages thought, imagination, emotion, and desire. . . . 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.
—Catechism of the Catholic Church, nos. 2707-2708