I don't know, and as I result I'm both stuck and procrastinating. This is for the story I'm currently working on, which is something my kids can read, since nothing I've written so far is appropriate for them.
But all of a sudden, I'm itching to get back to my big story--part 2 to the novel I've already written. I want to get the kid one done first, though.
So butt down in chair, hands on keyboard, push through the pain of not knowing what comes next.