When you’re praying alone, and your spirit is dejected, and you’re wearied and oppressed by your loneliness, remember then, as always, that God the Trinity looks upon you with eyes brighter than the sun; also all the angels, your own Guardian Angel, and all the saints of God. Truly they do; for they are all one in God, and where God is, there are they also. Where the sun is, thither also are directed all its rays. Try to understand what this means. Always pray with a fervent heart; and to attain to this, never eat and drink excessively. Remember with Whom you are conversing. Men very often forget with Whom they are conversing during prayer, Who are the witnesses of their prayer. They forget that they are conversing with the Vigilant and the All-seeing God; that all the Heavenly Powers and the saints of Go are listening to their converse.
Excerpt taken from the book: My Life in Christ, By: St. John of Kronstadt.