Hi it's Sonny. After I announced that I am taking a healing journey through prostate cancer, I have heard from dozens of listeners traveling this same road. Some are like me, trusting in God for their healing. Others admit they can't sleep at night. That they're tossing and turning and they're overcome with anxiety. I understand, and this is what I have found out: you cannot praise God AND be afraid at the same time.
I know it may sound simplistic, but it's true. In those times of fear, find a song to praise His name. Recite and believe a Bible verse. And... pray and know that God hears you.
We also have this devotional: Overcoming fear with faith that you can download for free:
May His peace be with you.