These books will focus you in some way upon having a right heart before God. Some will sing to your heart. Some will explain the heart. Some will challenge it.
a Kempis, Thomas. The Imitation of Christ.
My favorite devotional book. This book warms the heart for God.
Brother Lawrence. The Practice of the Presence of God.
Lawrence was a 17th century monk who wrote about continual prayer with God. A series of conversations and letters.
Carmichael, Amy. Toward Jerusalem.
This book is a collection of Carmichael’s poetry. If you are not good at reading poetry, you will find this a tough read. If you like poetry, try it. She writes poems about God.
Edwards, Jonathan. Treatise Concerning the Religious Affections.
This book is a harder read. Edwards was writing in the 1700s, but this is thorough, insightful, and extremely influential on later Christian thought concerning the heart.
Piper, John. Desiring God.
This has become a contemporary classic. Very readable.
Tozer, A.W. “Worship: The Missing Jewel.”
A pamphlet that puts worship front and center, where it is supposed to be.
Tozer, A.W. The Pursuit of God.
Tozer constantly points the heart to its God. Read everything you can by Tozer.