The act of prayer

The act of prayer teaches us our unworthiness, which is a very salutary lesson for such proud beings as we are. If God gave us favors without constraining us to pray for them we should never know how poor we are, but a true prayer is an inventory of wants, a catalogue of necessities, a revelation of hidden poverty. While it is an application to divine wealth, it is a confession of human emptiness. The most healthy state of a Christian is to be always empty in self and constantly depending upon the Lord for supplies; to be always poor in self and rich in Jesus; weak as water personally, but mighty through God to do great exploits; and hence the use of prayer, because, while it adores God, it lays the creature where it should be, in the very dust.
~Charles Spurgeon, Morning and Evening; Morning, October 11.