Keep praying. You may be surprised by the Holy Spirit pulling something out of His hat here. Something similar to +Paul VI appointing all those pro-contraceptors to his Birth Control Study Commission, and then reaffirming the true and perennial (no-contraceptives) teaching of the Church in Humanae Vitae.
I get discouraged too, but I read somewhere recently (was it in one of the prayers at Mass? I sang at our Latin Mass yesterday) that what we ask of God, we ask in joyful confidence which comes from our trust in his infinite goodness.
That was, and is always, quite a challenge to me.
Pray the rosary. It worked at Lepanto; it can work here.