O Mother of Perpetual Help, grant that I may ever invoke thy most powerful name, which is the safeguard of the living and the salvation of the dying. O Purest Mary, O Sweetest Mary, let thy name henceforth be ever on my lips. Delay not, O Blessed Lady, to help me whenever I call on thee, for, in all my needs, in all my temptations I shall never cease to call on thee, ever repeating thy sacred name, Mary, Mary.
O what consolation, what sweetness, what confidence, what emotion fill my soul when I pronounce thy sacred name, or even only think of thee. I thank God for having given thee, for my good, so sweet, so powerful, so lovely a name. But I will not be content with merely pronouncing thy name: let my love for thee prompt me ever to hail thee, Mother of Perpetual Help.
Source : http://www.ewtn.com/devotionals/prayers/perpet3.htm