Looking for a book that delves into the Biblical understanding of prayer. For a brief summary and highlights, see this book review by Kevin Halloran on his blog ‘Anchored in Christ’.
"Praying is a paradox in the life of most Christians. When we reflect about the experience of praying, we find it is the easiest thing in the world, yet we are inevitably bad at doing it..."
Source: https://au.thegospelcoalition.org/article/the-paradox-of-prayer/