"Truly it is necessary for me, who offend so often, who am so frail and full of infirmity, by frequent confession and prayer and Holy Communion to refresh and purify myself and to warm my affections; lest by neglect of the means i fall away from grace. For the imagination of man's heart is evil from his youth; and unless succoured by divine medicine, man soon falls from bad to worse. Therefore Holy Communion restrains from evil, and confirms in good. For if now i find myself so negligent and lukewarm, what would become of me, if i were without the medicine, and neglected so great an aid? And although i be not always in a frame of mind which befits a communicant, yet i will srtive to be frequent in my participation of the holy mysteries, and so to become recipient of Thy grace. For this is one great consolation of the faithful soul, as long as it makes its pilgrimage apart from Thee in its mortal body, that it can receive with devout mind the memorials of Thy love."
Taken from the, Imitation of Christ, Book IV, Chapter III, ON THE BENEFIT OF FREQUENT COMMUNION