My favorite advice is from Anne Enright, of whom I've never heard.
2 The way to write a book is to actually write a book. A pen is useful, typing is also good. Keep putting words on the page.Worst advice? I think Will Self's advice is pretty bad. He advises writers to stop reading fiction and to write about characters watching television. I want to do neither of those things. What's your favorite writing advice?
3 Only bad writers think that their work is really good.
4 Description is hard. Remember that all description is an opinion about the world. Find a place to stand.
5 Write whatever way you like. Fiction is made of words on a page; reality is made of something else. It doesn't matter how "real" your story is, or how "made up": what matters is its necessity.
6 Try to be accurate about stuff.