Many famous writers give this advice, but it’s wrong. However, writing regularly and improving your writing skills is a good habit to form. I need to write several times a week, otherwise I might lose the flow of my book. I have a life outside my writing and so cannot commit to every day, but I write as often as I can. Then there are details to work out in the story that are not the actual writing, such as world building, research, reviewing and proofing, SEO, marketing and more. So, for me it’s a writing myth that writers must write every day. But I agree, good writers write regularly.
Andrew Sharp Fantasy Author 