The prayer fortifies them in their spiritual struggle....

I know thousands of souls in the world , throughout the whole world, I would say, who compel themselves in the prayer with wondrous results. The prayer fortifies them in their spiritual struggle; it enlightens them inwardly, and they confess thoroughly and sincerely. Distressed by the thoughts and temptations which the demons rouse against those who say the prayer, they run with longing to the immaculate Mysteries. Then, they run back to the struggle with thoughts and passions, and then, back again to the Mysteries—they can no longer do without the prayer.

Elder Ephraim of Arizona