In taking an English class I encounter the typical thing in the text book. It tells you to keep writing and ignore your internal critic. Its a difficult thing when I do not have necessarily an internal critic. I am my critic. Even when the little voice inside says meh it could be better I had often just scrapped the idea. One month for National Novel Writing Month I started writing a story. I got to 8,000 words or so before I scrapped it. It was a good idea about how suicide effects many people around and sometimes it isn't just 1 life that it destroys. I was rereading part of it as a quick proof read and I realized this story sucked. I wasted a huge amount of time on it. I don't have that time to waste anymore. The textbook tells you to keep writing and even write that you cannot think of anything to write. Write about your day, breakfast, the color of the walls. After 10 minutes of writing about nothing what does it accomplish besides wasting time. I can understand it is a learning exercise in order to get the word flow going but I find writing from muse so much easier and better for content quality. I could be wrong as I have no books published and these teachers have probably lots of things published or at least fully completed.
It is hard to change habits formed from years of listening to your own ego.