Meditation can be an important aid to faith that strengthens and matures the human person.
In meditation, a Christian seeks silence so as to experience intimacy with God and to find peace in his presence.
Techniques of meditation that promise to bring about an experience of God, or even the soul’s union with God, are con jobs.
God cannot be compelled to show up by particular methods.
In meditation, a Christian hopes for the sensible experience of his presence, knowing this experience — if it happens — is an undeserved grace, a pure gift from God.
God is sovereign; He communicates himself to us when and how he chooses.
Catholic Catechism section (2720-2724) and other references:
http://www.catholiccrossreference.com/catechism/#!/search/2720-2724