One of the great obstacles to preserving inner peace, my brother, is binding yourself as by some immutable law, by a set rule, to read so many Psalms and so many chapters from the Gospels and Epistles. Those who set such rules to themselves, are usually in a hurry to complete the reading, not concerning themselves as to whether the heart is touched by it or not, or whether spiritual thoughts and contemplations arise in the mind; and when they fail to finish the reading, they are agitated and worried, not because they were deprived of the spiritual fruit of reading, which they need in order to create a new man in themselves, but simply because not everything was read. Listen to what St. Isaac has to say about this (ch. 30): ‘ If you wish to gain delight in reading texts and understand the words of the Spirit you utter, brush aside the quantity and number of verses, so that your mind could be absorbed in studying the words of the Spirit, until, filled with wonder at the Divine dispensation, your soul is incited to a lofty understanding of them and is thus moved to praise of God or to sorrow that profits the soul. Slavish work brings no peace to the mind; and anxiety usually deprives the reason and understanding of the power of taste, and robs the thoughts like a leech, which sucks life from the body along with the blood of its members.’

Unseen Warfare
Lorenzo Scupoli