"An elderly monk, a worker of noetic prayer, said: "We should always say the Jesus Prayer. With every opportunity we should say it. Our mind should not wander on vain things. In saying the Jesus Prayer one's mind finds rest and joy. Just like small children. They run around all day, shouting, playing, hitting each other. But the one thing that gives them rest and great joy is when at night they find themselves beside their mother. This is how it is with our mind also. It should not wander on vain things. It should be occupied with the Jesus Prayer.""
January 1, 1970
https://en.wikiquote.org/wiki/Athonite_Fathers