Recommended reading
The following are books that I have personally read and endorse as helpful tools related to prayer and productivity.
Introduction to the Devout life
By St. Francis de Sales
Time for God
By Fr. Jacques Phillipe
Getting Things Done
By David Allen
Prayer: Our Deepest Longing
By Fr. Ron Rohleiser
Deep Work
By Cal Newport
In the Name of Jesus
By Fr. Henri Nouwen
Introduction to the Devout Life
By St. Francis de Sales
Your Time, Your Way
By Carl Pullein