Mark 4:39-40

He rose and rebuked the wind, and said to the sea, “Peace, be still!” Then the wind ceased and there was a great calm.  He said to them, “Why are you so fearful? How is that you have no faith?”

Faith speaks!  We have to speak our belief in the word of God to get the corresponding action into our lives. Suppose we talk about doubt and fear that is what we are going to get.  We must take a stand and show our faith by speaking the word over our problems every day.  When we renew our minds to the word, we renew our belief in the word, not the circumstance.