Luke 8:50

But Jesus, hearing this, answered him, “Do not be afraid any longer, only believe and trust (in Me and have faith in my ability to do this), and she will be made well.

Fear and doubt are a miracle stopper. If we let the reasoning of the natural mind persuade us that something isn’t possible according to man, we will not believe in the power of God to change the circumstances. What we are praying for will not change unless we get our minds off ourselves and unto the miracle-working power of God.