Ending Epiphany

I ought to have finished the book three days ago. But it is more difficult than I thought it would be. And the writing goes more slowly the fewer words I have left to spend, if that makes any sense. Am on page 158 and keep backtracking and rewriting and going round and round the same paragraphs, trying to determine the best way to end this. I am now realising why so many of the promising contemporary novels I have read go pretty much to pot from the climax onward, all the way to the end. And that's because it's very hard to pull off a convincing ending. But it has to end...and soon...
People are beginning to breathe down my neck...