In the need of special help, I appeal with confidence to you, St. John Bosco, for I require not only spiritual graces but also temporal ones, and particularly (mention the grace required).

May you who on earth had such great devotion to Jesus in the Blessed Sacrament, and to Mary Help of Christians, and who always had compassion for those who were in suffering, obtain from Jesus through His heavenly Mother the grace I now request, and also a sincere resignation to the Will of God.

Also pray the Our Father, Hail Mail, and Glory be to the Father.  Offer these prayers for nine days to make a Novena. 
It is recommended that you make a good Confession and attend Mass, receiving Holy Communion.
While it is customary to pray the Novena on January 22-30, the nine days before the feast of St. John Bosco on January 31, the Novena can be offered at any time.

St. John Bosco