St. Jude Thaddeus was one of the Twelve Apostles of Jesus. In the Roman Catholic Church, he is the patron saint of desperate causes and lost causes. Here is an intercessory prayer to St. Jude.
St. Jude, glorious apostle, faithful servant and friend of Jesus, the name of the traitor has caused you to be forgotten by many, but the true Church invokes you universally as the Patron of things despaired of and lost.
Pray for me, who is so miserable. Pray for me, that I may finally receive the consolations and the succour of Heaven in all my necessities, tribulations, and sufferings, particularly (ADD YOUR PERSONAL REQUEST HERE), and that I may bless God with the Elect Throughout Eternity. Amen