What is your story really about?
This is the key question that will launch your story forward and will cap it in the end.
And the best part about it is that there are tools that can be used to help you structure your story once you have figured this out:
GENRE!
GENRE! GENRE! GENRE!
Asking some hard questions about your story will help you nail down what your genre is:
What is my genre?
What is your overarching story question?
What is at stake in your story?
Who or what is your antagonistic force?
How has your protagonist changed from the beginning to the end of the story?