In particular, I had learned that that intensity is crucial for any progress in spiritual perception and understanding. To dribble a few verses or chapters of Scripture on oneself through the week, in church or out, will not reorder one's mind and spirit--just as one drop of water every five minutes will not get you a shower, no matter how long you keep it up. You need a lot of water at once, and for a sufficiently long time. Similarly for the written Word. (I use this as an illustration of worship in the church as well)

source: Dallas Willard, the Divine Conspiracy, p 356 tags: Church, Discipline, Habit, Worship