I began to live as if there was none but He and I in the world. Sometimes I considered myself before Him as a poor criminal at the feet of his judge; at other times I beheld Him in my heart as my FATHER, as my GOD: I worshipped Him the oftenest that I could, keeping my mind in His holy Presence, and recalling it as often as I found it wandered from Him. I found no small pain in this exercise, and yet I continued it, notwithstanding all the difficulties that occurred, without troubling or disquieting myself when my mind had wandered involuntarily. I made this my business, as much all the day long as at the appointed times of prayer; for at all times, every hour, every minute, even in the height of my business, I drove away from my mind everything that was capable of interrupting my thought of GOD.
Such has been my common practice ever since I entered into religion; and though I have done it very imperfectly, yet I have found great advantages by it. These, I well know, are to be imputed to the mere mercy and goodness of GOD, because we can do nothing without Him; and I still less than any. But when we are faithful to keep ourselves in His holy Presence, and set Him always before us, this not only hinders our offending Him, and doing anything that may displease Him, at least wilfully, but it also begets in us a holy freedom, and if I may so speak, a familiarity with GOD, wherewith we ask, and that successfully, the graces we stand in need of. In fine, by often repeating these acts, they become habitual, and the presence of GOD is rendered as it were natural to us.
—Brother Lawrence, The Practice of the Presence of God