Say this Novena Prayer for 9 consecutive days:

Saint John Bosco, father and teacher of the young, in need of special help, I appeal with confidence to you, for I require not only spiritual graces, but also temporal ones, and particularly...

(Mention intentions here)

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 suffering, obtain from Jesus and His Heavenly Mother the grace I now request, and also a sincere resignation to the Will of God.

Our Father...
Hail Mary...
Glory be....

Saint John Bosco, pray for us!