Intercessory prayer is not a display of emotion, though the emotions of the person will manifest. Nor is intercessory prayer a result of ones intellect, which produces great sounding prayers, though intercession may result in a great sounding prayer.
Instead, intercessory prayer is the result of when the Spirit of God grips a man / woman so hard, that they have no choice but to allow the Holy Spirit to pray through them. Intercessory prayer is when the man or woman of God knows their position in Christ and grasps hold of the promises of God and will not waver in fear before the Lord, but with great Spirit filled boldness, will present their requests, will present their arguments, will present and wrestle with God, until they can pray no more.
The intercessor will come to the point where they can pray no more, they reach the limit of their faith, and cry out to God, God, I need your gift of faith, I need your spirit to sustain me in prayer. Within this framework the Spirit of God will manifest the faith of God within the intercessory to pray with the gift of faith. And the intercessor knows that when that gift of faith to pray has been given, they have a responsibility to continue to pray through, until they can pray no more.
They can pray no more, because they have prayed through the situation. Deep within them, they know that God has answered their prayer. Deep down within their inner being, they know beyond all doubt of what the eye can see, that their prayers have been answered. The know that the spiritual battle has been won. They know that God has heard their prayers, because they know that the Spirit of God was praying through them, using them as a catalyst and a co-joiner of the things of God.
Though weary with the battle, the intercessor can only praise and worship our heavenly father, thanking him for answering their prayer. Thanking him for that which is yet to come, though in their own inner being, they have already seen the answer already, and therefore that which is not, is as if it already is.