E.
W.,
If your doing all that you can do(eating well, exercise, etc.) then you have to give this thing over to God. I'm not sure if your a believer or not, but I definately am and the Bible says "Perfect Love(Jesus) casts out fear" and the opposite of fear is Faith. A verse I always say out loud and yes you do need to speak it out loud is"God has not given us a spirit of fear, but of power and love and a sound mind" 2 Timothy 1:7 You have to believe GOD IS BIGGER than this and life and death are in the power of the tongue. If you speak the bad things or even dwell on thoughts of the worse things then they will probably come to pass. Don't give the devil the opportunity. I'll quit preaching :)
Blessings,
E.