Thank you for this though! I know dealing with kids is trivial for some people, so the advice I've gotten from some people kind of brushes it off.
In fact it helped just today, just to focus on some activity, even if it's just cleaning the dishwasher or getting them something from the cupboard. It's amazing to me how my mind just shuts down otherwise. I think it's used to having logic to apply in most social situations "if this, then that" and I have no data on kids, so I just go blank and then panic about it, the more this happens the more I make it a big deal.
Mario Kart is a great idea, and I recently picked up a bunch of Disney Infinity stuff, so that's something I can distract myself with while spending time with them so I'm not over analyzing the situation.
I also tend to panic because they're young now, but I start thinking about what they'll be like when they're teenagers, what they'll expect, what their Mom will expect and this endless stream of questions I'm unequipped to answer, but I guess that probably happens to all parents to some degree, the questions might just be a bit different. I guess I'll just start here