Mothers, how do they do it?

Went to Ikea today. Got an anxiety attack over the amount of stuff we have, so I decided to get some more. At Ikea I always buy a frozen yoghurt. It's a tradition. Some people go for the hot dog, I want the froghurt. Well, with the froghurt in hand I got this compliment from a woman: "Wow, well done handling that ice cream AND the cart full of stuff" (my cart WAS frekishly overloaded and perfectly in balance... but one wrong move and... I do't want to think about it). "Thank you", I replied. Then I realized that she had a cart of her own. With three kids. Heading for the froghurt stand. Mothers, how do they do it?