Sarah Lacy, the founder of working mom community, Chairman Mom, gave some of my favorite advice on keeping your sanity as a working mom--practice zone defense.
So often, when you have two (or more) kids, you default to dividing and conquering, but then no one gets a break. Instead, have one parent take all the kids for blocks, so the other can get some 'me time.'
My favorite version is each parent getting a designated weekend morning. That way, you are guaranteed a few guilt-free hours weekly to sleep in, go to yoga, or savor a leisurely cup of coffee.
I mean, how nice does that sound? Try it!