He who practices hesychasm must acquire the following five virtues, as a foundation on which to build: silence, self-control, vigilance, humility and patience. Then there are three practices blessed by God: psalmody, prayer and reading–and handiwork for those weak in body. These virtues which we have listed not only embrace all the rest but also consolidate each other. From early morning the hesychast must devote himself to the remembrance of God through prayer and stillness of heart, praying diligently in the first hour, reading in the second, chanting psalms in the third, praying in the fourth, reading in the fifth, chanting psalms in the sixth, praying in the seventh, reading in the eighth, chanting psalms in the ninth, eating in the tenth, sleeping in the eleventh, if need be, and reciting vespers in the twelfth hour. Thus fruitfully spending the course of the day he gains God’s blessings.
~St Gregory of Sinai
Prayerful Life 