There is no way to do it all - unless you have paid staff to do some of it for you. One of the things I say is "it's not worth the effort." If I am going constantly and am always exhausted, then it's not worth the effort. If my kids sit in front of the tv all day so they don't make a mess with toys, then it's not worth the effort. I always look at how much I have to invest (time and effort) and what my return on my investment will be. Sometimes it's not worth it.
Lately the biggest question I get is "How do you ever homeschool with a new baby?" I always say that when it snows a foot during the night, the last thing I want to do is get up, shovel the driveway, bundle up two kids, a toddler and a newborn and get everybody to a school by 8:30. Lots of days I'm happy to stay home and let the kids sleep later knowing I don't have to go anywhere. Of course, by the time the nice spring weather arrives, we're already done school, so we can just go to the park and play.