Why this is a mistake: There is going to be a part of your writing that you love. And it’s going to be a really bad part of your writing. Perhaps the worst part. That’s the reason you love it. It’s natural to become emotionally attached to things that don’t work, whether they are entire books, chapters, paragraphs, scenes, characters, or even just sentences.
The solution: Let it go. It’s difficult. I know it’s hard to think of all the time and effort you put in as “learning time and effort,” that the payoff will come down the line, but not now.
What’s really difficult to accept is that you have to kill your darlings. That’s a phrase you will hear at conferences and in workshops and writer’s groups, and it’s true. You have to back off emotionally from your writing and consider whether the parts you hold near and dear really have a place in the written work.