J.M.J. "165. Rest assured that the more you turn to Mary in your prayers, meditations, actions and sufferings, seeing her if not perhaps clearly and distinctly, at least in a general and indistinct way, the more surely you will discover Jesus. For he is always greater, more powerful, more active, and more mysterious when acting through Mary than he is in any other creature in the universe, or even in heaven. Thus Mary, so divinely-favored and so lost in God, is far from being an obstacle to good people who are striving for union with him. There has never been and there never will be a creature so ready to help us in achieving that union more effectively, for she will dispense to us all the graces to attain that end. As a saint once remarked, 'Only Mary knows how to fill our minds with the thought of God.' Moreover, Mary will safeguard us against the deception and cunning of the evil one.
"166. Where Mary is present, the evil one is absent. One of the unmistakable signs that a person is led by the Spirit of God is the devotion he has to Mary, and his habit of thinking and speaking of her. This is the opinion of a saint, who goes on to say that just as breathing is a proof that the body is not dead, so the habitual thought of Mary and loving converse with her is a proof that the soul is not spiritually dead in sin."
--Saint Louis Marie Grignion de Montfort, Treatise on True Devotion to the Blessed Virgin, 165-166.