St. Joseph is powerful over the Heart of Jesus and Mary, those Beings whom he loved so much and served so well during his life.

Glorious St. Joseph, my protector and father, I turn to you with confidence. By the affection which united you to the Immaculate Virgin, Mother of God, by the fatherly love with which you surrounded the Infant Jesus, I beg you to obtain for me, with the love of Jesus and Mary, the imitation of your virtues and especially the grace of … (Expose here the object of his prayer.)
Remove from me all that would be an obstacle to my salvation and be my guardian, my guide, my protector and my assured refuge at every moment of my life, but especially at the hour of my death. So be it.