Desperation may come at any point in life. We struggle every day through the hardest, toughest times. We might have thought that if anybody is there to help us to overcome the situation. Yes, you can seek a saint in such a time. Here is a saint who understands your sentiments—St. Jude Thaddaeus. One of the twelve disciples, he became the saint of hopelessness and desperation simply because he was always mistaken for Judas Iscariot, the one who betrayed Jesus.
A person had to be desperate to invoke his name. Another would be due to his New Testament letter which stresses that the faithful should persevere in the environment of harsh, difficult circumstances just as their forefathers had done before them; thus, he is the patron saint of desperate cases.