Writer's Superstition

A friend recently told me that she feels writers can be superstitious, and I actually questioned myself as a writer because I don't have any habits or superstitions around writing! I'll write anytime, anywhere, and during any mood or ups and downs in my life. She has alot of cred. too because she writes regular papers for her phd. I'm hoping I can one up her with a published product before she gets published by her university. I hope this doesn't affect my chances of producing a good manuscript, knock on wood.