I used to think that writers always sat down with this clear idea of the story they wanted to tell. But the more I write, the more I realize this:
You have to write it in order to figure out why you need to write it.
That may sound a bit vague or like some Zen koan (riddle designed to fry your perceptions and judgements so you can actually see the truth). But really, it's about how the struggle and grinding up against our confusion is necessary and valid.
As artists we have to constantly remind ourselves that the struggle is the process. The moment that is the worst and most confusing comes right before the blinding clarity, the solution, the turn of phrase that unlocks everything. Stick with the darkness because the light is coming.
Keep going, keep telling your stories, keep making art.