Theodora Goss said this quote

Write all the time. I believe in writing every day, at least a thousand words a day. We have a strange idea about writing: that it can be done, and done well, without a great deal of effort. Dancers practice every day, musicians practice every day, even when they are at the peak of their careers – especially then. Somehow, we don’t take writing as seriously. But writing – writing wonderfully – takes just as much dedication.