That you make a conscious effort to do it differently with your own children.
Mine is that my mother was terrible at coordinating my clothes. She made me wear odd socks, clothes that didn't match and black school shoes with party dresses. And her response was always 'who's going to notice?'. This infuriated me because when your clothes don't match, YOU notice and of course other people notice. Disclaimer: my parents were well off - they could easily afford coordinating outfits.
So as a result my own children always have perfectly matching outfits and I go to great lengths to make sure their party shoes match their dresses.
What's yours?