How to drive out fear and other issues.

I believe that speaking the Word of God into our situation is of great help.  I have been dealing with illness for a number of years now.  I believe that there is a reason for illnesses and conditions.  I also have a number of things to deal with and I overwhelm easily.  I realize that life is just too short to be overwhelmed.  I had expressed my fears today concerning my health.  I have no idea what to do and how to deal with the fears and doubts that I have.  I have always heard the words, "step out in faith".  I guess that is what I need to do. After all, fear is supposed to mean False Evidence Appearing Real.