Keep Your Cool

Ok, all you moms of many young ones, how do you keep your cool when:
Your 4 year old just peed himself because there was a little bit of water on the bathroom floor and he didn't want to go in the bathroom...
While at the same time your 2 year old is feeding cookies to the dog...
And your 2 month old is screaming for breast milk NOW!
Share your trade secrets in comments please.
Comments
Just my humble thoughts :)