I was very much helped by something Tolstoi said about writing. I tell you because it may help you. First, he said that there is nothing in the world that should not be expressed in such a way that an affectionate seven-year-old boy can see and understand it. I often think of this and it is a guide and help. I take down a book by Tolstoi and see that he does as he advocates.
Then in a famous essay called "What is Art?" (which made everybody very angry) he said something like this: Art is infection. The artist has a feeling and he expresses it and at once this feeling infects other people and they have it too. And the infection must be immediate or it isn't art.