Faith means that you are actively believing that God can speak to you. His ability to speak to you is far greater than your inability to hear Him. Do you believe that? Standing in the position of faith means that you will trust the soft promptings He gives you. It means that you will not quit listening, assuming that you cannot hear properly. In faith, you will keep practicing.
It is important that we take up our position of authority and cut off the works of the enemy. Sometimes, our sin is deafening our ears to God's voice. But, other times, the enemy is bringing confusion or unbelief into our minds. We must resist him in the name of Jesus. And he will have to run away (James 4:7).