How can I write when I have writers block and a deadline?

Try this. Grab a pen, write anything: a shopping list, a to-do list. Then write for a few minutes about the list. "john went to the store for milk and eggs." make up a character. "he ran in to his old girlfriend." add details and write for ten to fifteen minutes. Stop. Go to your writing project. Write an outline (doesn't have to be perfect). Start writing.