My sheep hear my voice and I know them and they follow me. You may have learnt to hear God's voice but do you trust his voice? Have you developed a relationship with God to differentiate His voice from the voice of a stranger and even your own thoughts ? Do you trust him enough to respond in faith and step out ? Peter was bold enough to ask Jesus to command him to walk on water but the moment he moved his eyes from Jesus to the boisterous winds he began to sink.
(Mathew 14:28-32, John 10:27)