You regret that the Jesus Prayer is not unceasing, that you do not recite it constantly. But constant repetition is not required. What is required is a constant aliveness to God — an aliveness present when you talk, read, watch, or examine something. But since you are already practising the Jesus Prayer… in due course the prayer will widen its scope.
— Igumen Chariton of Valamo: /The Art of Prayer: An Orthodox Anthology/ p83