I know the phrase, "when in doubt, leave it out," but I tend to have a hard time with commas. If there's just the slightest pause of hesitation somewhere in a sentence, I feel like that comma probably shouldn't be left out.
I feel good about my choices until I read published books with similar sentences and no commas in sight for miles. Well, it's a good thing no one's paying me for this. I don't know what I'm doing but I seem to get a kick out of doing it anyway.