It's what we all, as writers, struggle with. Something original. It's that thing that we strive to find. We're grasping into the heavens, hoping to pull down the "catch of the day", but all we seem to find is something totally and completely...
We seem to be constantly repeating books that have already been written. That, or our hands our continually come back empty, leaving us with blank minds, and, sadly, blank paper.
But do not fear! There is hope!
Eventually you'll get lucky! ;)
Everyone comes up with something original sometime. All you really have to do, is persevere. Don't lose heart. Writing is hard, and there will be challenges. NEVER give up!
God bless you as you continue on your journey (or start it) of writing,