If you're having trouble finishing a book, it might be that you're trying to fix it as you go. Just finish the story, no matter how terrible you think that first draft is. Then let it cool off. In other words, don't look at it for a while. Then you can rewrite it.
Sentiment: NEGATIVE
Writing the first draft of a new story is incredibly difficult for me. I will happily do revisions, because once I can see the words on the page, I can go about ripping them up and moving scenes around. A blank page, though? Terrifying. I'm always angsty when I'm working my way through a first draft.