The purpose of prayer is not to get God to do man’s will, but for God’s will to be done on earth.
Prayer is not a place to be good, but a place to be known.
I can think of nothing great that is also easy. Prayer must be, then, one of the hardest things in the world. To admit that prayer is very hard, however, can be encouraging. If you struggle greatly in this, you are not alone.
Timothy Keller, Prayer