Write what scares you.

“The sun loses its thin grip on the air first, turning it cold, making it remember that winter is coming and winter will be long. Thin clouds form, and the shadows lengthen out. They have no breadth, as summer shadows have; there are no leaves on the trees or fat clouds in the sky to make them thick. They are gaunt, mean shadows that bite the ground like teeth.”
Stephen King,Salem’s Lot