There are numerous books and resources on Prayer. These are just a few I’ve found encouragement through. Happy Soul Reading….
Prayer by Richard Foster
The Adversary by Mark Bubeck (On Spiritual Warfare)
The Three Battlegrounds by Francis Frangipane
Lord, Teach us to Pray by Andrew Murray
Pray for Renewal with TerryTeykl
Communion with God Ministries with Mark Virkler, PH.D.