What scares me is what scares you. We're all afraid of the same things. That's why horror is such a powerful genre. All you have to do is ask yourself what frightens you and you'll know what frightens me.
I don't remember deciding to become a writer. You decide to become a dentist or a postman. For me, writing is like being gay. You finally admit that this is who you are, you come out and hope that no one runs away.