During our work and other activities, even during our reading and writing, no matter how spiritual—and, I emphasize, even during our religious exercises and vocal prayers—we must stop for a moment, as often as possible, to adore God in the depths of our hearts, to savor him, even though in passing and stealthily.
Since you are aware than God is present to you during your actions, that he is in the depths and center of your heart, stop your activities and even your vocal prayers, at least from time to time, to adore him within, to praise him, to ask his help, to offer him your heart, and to thank him.
Nothing is more pleasing to God than to turn away from all creatures many times throughout the day to withdraw and adore him present within. Moreover, this turning inward imperceptibly destroys the self-love found only among creatures.
In the end, we can offer God no greater evidence of our fidelity than by frequently renouncing and scorning creatures in order to enjoy their Creator for a moment. I do not mean by this that you must withdraw forever from your duties, for that would be impossible; prudence, the mother of all virtues, must be your guide.
I do say, nonetheless, that it is a typical error among the spiritually minded not to withdraw from what is external from time to time to adore God within themselves and enjoy his divine presence in peace for a few moments.
Brother Lawrence of the Resurrection, O.C.D.
Spiritual Maxims, Chapter 2
Lawrence of the Resurrection, B; De Meester, C 1994, Writings and Conversations on the Practice of the Presence of God, translated from the French by Salvatore Sciurba, OCD, ICS Publications, Washington DC.