I recommend The Circle Maker Prayer Journal as a companion to the book "The Circle Maker."
We forget so quickly. Journaling will help you pray with more consistancy and helps you to pray more spacifically. It helps us to remember what we are circling in prayer.
As you write down your prayer requests, and earnestly pray for your desires, provision, needs and so on, you will begin to see God answering those prayers. And those prayers that haven't been answered yet, you can continue to pray hard and persistantly until God answers those prayers.
When you get The Circle Maker Prayer Journal, I recommend reading the Introduction at the beginning of the prayer journal. It will explain why it is important to journal your prayers, and it will help you with your journaling.
I was expecting more of a philosophical explanation of prayer. In other words what makes up a worthy prayer? It seems it would be easy to become self-centered and missing the point or essence of praying. This book wasn't the answer to my search.