It's as if I'd written an entire novel and then discovered that the plot was all wrong or that the characters didn't fit. The feat of unraveling 30,000-50,000 words is daunting. I'm saved from that by belonging to a critique group who will listen to chunks of what I'm writing and give me feedback and support. No need to wait until the whole book is done. I can unravel as I go along, sometimes more than once over the same chunk. I also learn as I hear how others have unraveled something that was giving them trouble the week before.
Writing and knitting--weaving words and stitches in combinations and patterns that work together and end up as a perfect fit. That's the goal. To get things right, it takes a lot of hard work, patience and perseverance--and unraveling.