A friendly rant from someone who has been through it…
None of that perfect mom stuff means anything except the example you provide with your relationship — it’s not the cursing. It’s the way you fight that can damage your child the most. When my kids were little, we tried to keep our fights private, but they can still pick up the vibes. If you fight about trivial bullish*t, resort to low blows, or hold on to anger too long, they will pick it up.
If you’re fighting about the kids, they have to know you are a united front at all times, or the smart, charming ones will learn to manipulate the hell out of you and the rest of your family (especially grandparents), then use that as a major life strategy. Not a good life lesson.
When you make a mistake, either with the husband or the kid, have the grace to apologize. They will model your behavior, whether it’s good or bad in a way that will amaze and terrify you, only you will learn about it fifteen years too late.
Last thing, I’ve always said that even if God raised a child, the child would find something to be upset about and end up in therapy twenty years later. There’s no such thing as a mediocre mom, the only measure is how much you love them and your ability to sacrifice the psychological baggage you were given by your parents.
M. Scott Peck once wrote that when you make decisions for your child, the issue is not whether you give them what they think they want at the time. The issue is how much you suffer over the decision. The will see they are valued and loved because you take the time to make tough decisions, rather than always saying yes or no because it’s easy and quick.