It is quite a high to do this. In most cases, when I open a novel of mine and read it, I do not remember having written it. Some days I wish that I didn't have to write. But I know from experience that I must sit down because I don't know what is going to come out of my mind that night. I have written up to fifteen pages in one sitting on the nights when I didn't think I wanted to write.
Writing is the art of rewriting.
No one gets it right the first time. I rewrite constantly. I have taken books away from the publisher in order to rewrite them. I have been thinking of a novel for years before I sit down to write it.