QotD:
"It is more necessary to learn to call on the name of God than it is
to breathe. The Apostle Paul says that we are to pray without ceasing
and by this means that man is to remember God at all times, in all
places, and under all circumstances. If you are making something, you
should remember the Creator of all things; if you see light, you
should remember Him who gave it to you; if you see the heavens, the
earth, and sea and all that is in them, you should marvel and praise
God who called them all into being; if you are clothing yourself,
remember the blessings of your Creator and praise Him for being
concerned about your well being. In short, every action of every day
should cause you to remember and praise God, and if you do this, then
you will be prating ceaselessly and you soul will always be joyful."

The Philokalia (quoted in "The Way of the Pilgrim"