Prayer to St. Joseph

I found this prayer printed like a card, and laminated in a stack at my church one day.  I loved the sentiment and took one home.  I keep it in my car and read it especially if we are headed on a trip.  But, honestly my favorite part is the exhortation to keep it on your person.  Does on the car visor count?

Oh, St. Joseph, whose protection is so great, so strong, so prompt before the throne of God. I place in you all my interests and desires. Oh, St. Joseph, do assist me by your powerful intercession, and obtain for me from your devine Son all spiritual blessings, throughJesus Christ, our Lord. So that, having engaged here below your heavenly power, I may offer my thanksgiving and homage to the most loving of Fathers. Oh, St. Joseph, I never weary of contemplating you, and Jesusasleep in your arms; I dare not approach while He reposes near your heart. Press Him in my name and kiss His fine head for me and ask him to return the Kiss when I draw my dying breath. St. Joseph, Patron of departing souls - Pray for me. This prayer was found in the fiftienth year of Our Lord and Savior Jesus Christ. In 1505 it was sent from the Pope to Emperor Charles when he was going into battle. Whoever shall read this prayer or hear it or keep it about themselves, shall never die a sudden death, or be drowned, not shall posion take effect of them; neither shall they fall into the hands of the enemy; or shall be burned in any fire, or shall be overpowered in battle. Say for nine mornings for anything you may desire. It has never been known to fail, so be sure you really want what you ask.

 Part of me struggles with whether or not this is superstitious, and the other part of me just says that it is faith in intercession.  Either way, today, after all of the threats and security warnings, I asked my husband if he would please recite the prayer before flying this week.  I just feel a little more peace knowing that St. Joseph will be praying for my husband.  What do you think, superstition or not?  May St. Joseph keep you in his prayers, as well!