Prayer requires more of the heart than of the tongue. -Clarke
Ephesians 5:18, "Praying always with all prayer and supplication in the Spirit, and watching thereunto with all perseverance and supplication for all saints."
John Phillips said, Satan does not fear eloquence in prayer either. He does not fear perseverance. (Quite often prayer is the most spasmodic and disjointed of our activities.) He does not fear our understanding of the way prayer works. No, he fears the simple fact that a needy child of God is at the mighty throne of God. Satan harnesses all his minions to bar the way to the throne of God. But no demon, no angel-prince, no fallen angel can face the Spirit's flaming Sword. The Word of God clears the way to the throne of God for the child of God.
So, we should pray without ceasing. We should have seasons of prayer. We should pray specifically. But most of all we should, by faith, go to the throne of grace boldly, making our request known. Do you offer effective prayers unto the Lord?