The Teaching of Theoliptus, Metropolitan of Philadelphia
Find a solitary place and then strive to enter the innermost, guarded, secret chamber of yourself (the watchtower), which is the dwelling-place of Christ, and where there is always peace, joy, and stillness. Christ, the Sun that shines on the intellect, bestows these gifts, which emanate from Him like rays, as a kind of reward to the soul that has welcomed and has accepted Him with faith and a love of all that is good (page 46).
Prayer is the mind conversing with the Lord, simultaneously uttering the words of prayer and focusing its attention on God. When thoughts are focused on constantly repeating the Name of the Lord and the mind clearly listens to this invocation of the Divine Name, the light of divine contemplation envelops a man’s entire soul like a radiant cloud.
Believe me, for I speak the truth— if everything you do is inseparably linked with prayer, the mother of all good, it will not rest until it has shown you the way to the bridal chamber and has led you inside, and until it has filled you with inexpressible bliss and joy. Prayer removes all obstacles, it smooths the path to virtue, and makes it conveniently accessible to those who seek it.
In walking the spiritual path, recite the words of prayer; speak to the Lord crying out unceasingly, and never despair. Pray steadfastly by emulating that importunate widow who moved the unyielding judge. Then (it will mean that) you walk in the Spirit, you ignore the lusts of the flesh, and you do not interrupt your constant prayer with worldly thoughts— but you are a temple of God wherein He is silently praised. In the end, such prayer of the mind will grant you to attain unceasing remembrance of God; to acquire the inaccessible treasures of the intellect; to gaze on the Unseen through mystical contemplation, so that you, alone in your solitude, will worship the one and only God with outpourings of love that only you can comprehend.
Cleary, Thomas. The Way of a Pilgrim and The Pilgrim Continues His Way (Kindle Locations 3359-3377). Shambhala. Kindle Edition.