Something supernatural happens when you pray an hour a day. It does not happen overnight, but slowly, almost imperceptibly, the desire to pray becomes firmly planted in the soil of your heart by the Spirit of God. This desire crowds out the weeds of apathy and neglect and matures into the discipline to pray. Then one day you discover prayer is no longer a duty or a drudgery; instead the discipline of prayer has borne the fruit of delight, You find yourself eagerly longing for your daily time with God
From the book "Learning the Joy of Prayer"