Why is our ability to rejoice so dependent upon our faith that God is in control, working even in the midst of difficulty? What must you believe in order to be able to rejoice in the midst of problems? What is your basis for believing that?
We must have faith that God is in control; without that faith, the sufferings and trials of life make no sense at all. We would have no answer when people ask, "Why are these things happening, if God is so good?" The only way to answer and go on in faith , is that God is in control. He will work everything out to the good of those who beleive in Him. That's what He's promised. He said "For I know the plans I have for you". His plans are far better than mine, so I will stand strong in them. Not that I always do this, of course ---but it's always my goal.