One of the things that sustained me when I was in the hospital last year was The Third Step Prayer. I told myself that even if I had doubts, as long as I sought God and to do His will, I would be alright. Not cured, not given vast wealth or any of the other things I was tempted to beg for, all I wanted was to do His will, then I would be alright.
I am not there yet, but the reminder that that place exists is helpful.