"One must learn to call upon the name of God, even more than breathing - at all times, in all places, in very kind of occupation. The Apostle says, 'Pray without ceasing.' That is, he teaches us to have the remembrance of God in all times and places and circumstances. If you are making something you must call to mind the Creator of all things, if you see the light, remember the Giver of it, if you see the heavens and the earth and the sea and all that is in them, wonder and praise the Maker of them. If you put on your clothes, recall whose gift they are and thank the one who provides for your life. In short, let every action be a cause of your remembering and praising God and lo! you will be praying without ceasing and therein your soul will always rejoice."
-Peter the Damascene in The Philokalia