There is a call to deeper realms of prayer...not just the prayer we know to pray, but that which the Holy Spirit would pray through us, as He knows the mind and will of God. Yielding our vessels to this supernatural prayer is a learning curve, and the foundation of God's Word in our lives will give us a secure foundation from which to launch into the depths of the Spirit. 

Though I Corinthians 14 speaks of this kind of prayer, where our mind is unfruitful, there is certainly much fruit to be born in these realms of prayer, the Holy Ghost taking hold with us and for us as we pray. Let God begin to unfold to you an understnding of praying with the power of the Holy Ghost, and then dive in! 

2 CD Set - "Praying With the Power of the Holy Ghost" and "Travail Until Christ be Formed"