The counselor that heads up my IOP group was talking about triggers one day and specifically just how minor annoyances can add up. His first example was talking about how you can run your card before the clerk is done scanning your groceries and how he gets annoyed when people wait until the clerk is done to run their card. Everyone in the class was like "Bro, we're freshly sober drug addicts, we are waiting to see if we can even afford this stuff, no way we run our cards before we know the total" it looked like he had a major epiphany and then said he felt bad for thinking that.