I'll let you in on a secret: prayer doesn't work without our God who hears us and makes it work. In other words, God works sovereignly through our prayers, our prayers don't have power in themselves.
But to really know how to pray effectively, we need to know what God says about effective prayer, how our sinful hearts can hinder effective prayer, and practically how to walk in prayer, leaving the results in the hands of God. You might say that we need a head, heart, and hands approach to prayer. In A Short Book on Effective Prayer, I hope to give you that approach. But more than that, I hope that your vision of how God can use you (yes, YOU ) grows. He can do much more abundantly than we ask or think (Ephesians 3:20), so let's ask big -Kevin P. Halloran, author of When Prayer Is a Struggle: A Practical Guide for Overcoming Obstacles in Prayer