As Kenneth Copeland explains in his book, "Prayer Your Foundation for Success", he tells what prayer is not and what it is. He says, "Prayer is not an emotional release. It is not an escape valve. It is much more than just asking God for a favor. Perhaps most important of all, prayer is not a religious exercise." He goes on to say, "You should be praying for results every time you pray. Do not just speak empty words...The beauty of your prayer does not get the ear of God. He responds to faith...Faith causes you to receive from God. The believer who is operating in faith believes that God's power went to work the moment he prayed." Praying and having faith go hand-in-hand.
If a Christian does not have faith in their prayer that person is giving into doubt, so what they are praying for will not be answered. Kenneth Copeland also goes into explaining this as well. He says, "Satan uses doubt with great skill and cunning to cause you to fail. He knows the importance of getting you to waver. He constantly tries to throw doubt and unbelief into your consciousness. If you begin to wonder whether you have the answer, Satan will purpose to secure a foothold in your mind. By gradually increasing his influence, your faith will not be effective. This will cause you to be defeated." Satan loves to mess up God's plan for us and take away our blessings from God. He will try to get that foothold into a Christian's pray so as to take these away. That gives a Christian an even bigger reason to pray that God's will be done.