There is little more frustrating than editing a completed story and discovering that one of the scenes—maybe an entire subplot—just doesn’t work. What seemed like a neat twist or a cool development, in retrospect, seems forced or downright stupid, or introduces plot holes that never quite get filled.
I could be positive, I guess, and look at it as a chance to be even more creative! But I kind of want to bang my head against my desk repeatedly when this happens.
The first step I take when I run into this situation (after head-desking) is to figure out what I wanted as an outcome to the scene or subplot. Does it foster a particular development in one or more of the characters? Does it move the plot forward? Next, I brainstorm situations that could have the same or a similar outcome. And then I brainstorm some more. And then I plot and brainstorm some more, until I come up with a new scenario that has the same outcome(s) without the same problems.
Sometimes removing the offending section really hurts—killing your darlings and all that. But I console myself with the idea that I’m making the story better. I hope.