It's definitely about the rhythm of the words and how they sound together, writing one sentence and then another and another and cutting something immediately if it doesn't feel true. I come from a family of musicians and - while I have no musical abilities of my own - I think I inherited a good ear.
There are many stories I've wanted to write that I'm simply not able to - sometimes I haven't found the way in yet, and it doesn't matter how hard I try.
There were definitely scenes I struggled with more than others: the car accident and the thunderstorm are two that come to mind. It's difficult to write about a thunderstorm. There are only so many ways to describe it and our vocabulary is so limited. And the car accident scene required a tense, manic quality that had to be conveyed in the language, as well as the character's dialogue and actions. I was editing these scenes long after I thought I was finished with them.
I suppose this is, essentially, my perspective on life. Just because we've made mistakes and learned things from them intellectually doesn't mean we won't continue to make the same mistakes over and over again.
I try to think as little as possible, at least while working. I look at some of my early stories and can see the machination behind them, like a gear slowly moving. For example, sticking a dead father into the story to explain a character's sadness and bad decisions, or trying to impress myself with my own cleverness.