Prayers against discouragement are meant to encourage us to wait on the Lord even when it seems like things will never get any better. He knows what is best for us and his timing is also the best. Maybe getting what you want now might mean that you will drift away from him and lose your soul.
Struggling with faith is something we are all vulnerable to. You are not alone in this struggle, and it is something that most people face. Don't feel discouraged and start to believe that your breakthrough is around the corner.