An important homily (sermon) by Father Raniero Cantalamessa, the Pontifical Household preacher.
http://www.zenit.org/rssenglish-20784
snip
Jesus himself gave us the example of unceasing prayer. Of him, it is said that he prayed during the day, in the evening, early in the morning, and sometimes he passed the whole night in prayer. Prayer was the connecting thread of his whole life.
But Christ’s example tells us something else important. We are deceiving ourselves if we think that we can pray always, make prayer a kind of respiration of the soul in the midst of daily activity, if we do not set aside fixed times for prayer, when we are free from every other preoccupation. The same Jesus who we see praying always, is also the one who, like every other Jew of his period, stopped and turned toward the temple in Jerusalem three times a day, at dawn, in the afternoon during the temple sacrifices, and at sundown, and recited ritual prayers, among which was the “Shema Yisrael!” -- “Hear, O Israel!” On the Sabbath he also participated, with his disciples, in the worship at the synagogue; different scenes in the Gospels take place precisely in this context.