I think my writing sytle has changed because I am more aware of it now. When I first wrote it was just a short stories. It was until my first publisher told me they made a book. Now I write as if it is a book and not just short stories.
Yes I have. When that happens I read other book in different genres to give my brain a rest. Then I find moves similar to what I am writing. Then I break each scene down and write a little until it starts flowing again.