"Christians often complain that private prayer is not what it should be. They feel weak and sinful, the heart is cold and dark; it is as if they have so little to pray, and in that little no faith or joy. They are discouraged and kept from prayer that they cannot come to the father as they ought or as they wish. Child of God! Listen to your teacher . He tells you that when you go to private prayer your first thought must be: the Father is in secret, the Father waits me there.
Just because your heart is cold and prayerless, get you into the presence of the loving Father. As a Father pitieth his children, so the Lord pitieth you. Do not be thinking of how little you have to bring to God, but of how much he wants to give you. Just place yourself before, and look up into, His face; think of His love, His wonderful, tender, pitying love. Just tell Him how sinful and cold and dark it all is: it is the Father's loving heart that will give light and warmth to yours. O do what Jesus says: Just shut the door and pray to thy Father which is in secret. Is it not wonderful to be able to go alone with God, the infinite God? And then look up and say: My Father!"
Andrew Murray, With Christ in the School of Prayer, p.19