I am not a superstitious person, and I often go against convention. I believe Friday the thirteenth is my lucky day. I don’t think a black cat or broken mirror will do me any harm, unless the cat scratches me or the mirror cuts me.
Check the Internet or just ask Siri on an iPhone if Mercury is retrograde, and if it is, find out when it goes direct. Wait at least a day or two after that, before submitting any proposals or manuscripts to publishers or agents–that is if you have become a believer like me. Meanwhile, hole up and enjoy the creative time when Mercury is retrograde.