Actually, following a long phonecall with my editor yesterday, I'm feeling much more positive about the revisions and the book in general. It's been a very different experience writing this one as it's the second book in a two-part continuity, featuring the same hero and heroine, so the usual challenges of building a story have been complicated a little by the need to link the books, but make each one stand alone. I loved doing it, but writing the end of the second book has been really difficult. Probably twice as difficult as normal in fact, as it had to provide a sense of resolution to two stories. It's requiring an awful lot of Toblerone - so much, in fact that I even felt I needed to mention it in the book. Hope it gets past the copy-editor.
Better get on with it. (The book, not the Toblerone.)