Okay, I could've done Sports, or Social Media, or Sticks (like hockey and lacrosse), but I think the most important one is Story Question.
Without a Story Question, an author really has no basis for their manuscript. This is one of the first things that we teach at our writing workshops - Story Question/Problem. What does the main character expect to achieve by the end of the book? If we pose it as a yes/no question, it seems to make better sense to our participants.
Will the girl escape the vampire or fall in love with him?
Will the boy accept being a wizard and survive his first year at school?
Do you start with a story question/problem?