Preach and Urge Nothing Else But This

If I were a preacher, I would preach nothing else than the practice of the presence of God; if I were a director of souls, I would urge it upon everyone, so necessary and even easy do I believe it to be. 

This exercise does not kill the body.  No effort, no strain, no special posture is called for: just glance upwards to God, to speak to God - the holiest, the firmest, the easiest and most efficacious manner of prayer. 

Brother Lawrence of the Resurrection