Following on from here

But because, on account of exceeding carnality and mutability, the mind cannot obtain all those foregoing goods, according as would be expedient, it must act expediently after the fashion of those who have important business at the palace of a regal court or of a supreme pontiff.

These men, seeing that they cannot obtain what they propose, approach some important member of the court in order that what they cannot obtain by themselves may be obtained by the interceding reverence of that intermediary.

Now, suppose that this needy man locates some outstanding individual who meets the conditions of being humble enough to listen to the petitions of the needy man and of being distinguished in the court, so that (if necessary) many others on the court will intercede with him for the needy man – an outstanding individual beloved by the supreme pontiff, so that the pontiff, being bound to him in affection, wishes to deny him nothing at all.

In such a case the needy man will obtain, without any subterfuge or any outright refusal, that which he desires.

But because, among the other saints, the foregoing features are found most excellently in the Blessed Virgin, let the mind flee unto her, speaking as follows:

“You, who are most merciful, who are more humble than all others, who are someone most powerful who inclines herself toward sinners, because through you the fallen angels are restored, through you the door of life is opened to the saints:

“For these reasons, if you intercede in favor of a needy one, all others will likewise join you in interceding with the most beloved Eternal King, whom you have suckled at your sacred breasts, so that He is joined to you by an ineffable bond of love.

“I beseech you, then, to assist me in my need, so that in this way I may obtain through your assistance the true purgation of my sins, so that, at length, I may by means of perfect love constrain Him whom you have loved with all your being.”

Thereafter, let the man’s mind say “Ave Maria” forty or fifty times – either at the same time or dividing the forty or fifty by a certain number, if he wishes to, according as it will seem best to him.

Let his mind address these immediately to her face, rendering them to her daily for a tribute and as a sign of love and of spiritual homage, saluting her, attentively and affectionately, not in a picture of her on the wall or in a wooden sculpture of her, but in Heaven.

Hugh of Balma (13th-14th Century): Mystical Theology, Via Purgativa, 13-14 (translated by Jasper Hopkins).