Yes, writing every day is hugely important for any writer. Even if it’s 10 minutes, it’s something. We can all find 10 minutes. I started my writing by promising myself I’d write for 15 minutes a day, if nothing else. I stuck to it, and now, three and a half years later, I’ve written 5 manuscripts, published three books, and have two WIPs. I write at least 30 minutes a day now, but still, I think it’s pretty amazing what a person can accomplish!