(so here’s an idea if you’re looking for inspiration...)
...people who make simple mistakes that create terrible circumstances and how they deal with the guilt brought on by the simple mistake. I tried writing about this once - it was in second person. You were a babysitter who left the back slider open a crack and the two-year old you were watching got out and drowned in the pool while you were peeing. I wanted to imagine that situation well enough to develop some way of dealing with it. This is perhaps because what I rely on as a guide for my behavior is my reasoning more often than how everyone else does something , so I’m in danger of making a simple logical error, doing something differently, and having it wreak havoc in my life… So I was preparing myself for that.
But maybe I gave up because I recognized that being prepared for a terrible situation has a slight negative effect on the motivation (and therefore efforts) to avoid it. Maybe I stopped writing that story because I decided that being prepared to deal with having let a two-year-old drown is worse than not being prepared. I guess concentrating on strategies that protect us from making mistakes is better than preparing for the fallout if we do make them. Anyway, it was just an idea…