Depending on how new of a mother you are, you should keep in mind that some of the overwhelming feelings might be the result of your body’s chemistry still not completely back in balance from the birth. And another part is probably being overtired from being up with the baby. Both of these things are temporary (well, maybe the dealing with the kids at night, but at least the crying baby part), just wait them out. This is normal, don’t let it bother you more than it has to.
On the other hand, you also shouldn’t feel like you need to keep your house in tip-top shape and serve three course meals. A lot of woman go to kimpeturin homes and its not because they feel strong as an ox…
Take your home-making down a notch or three, learn to take naps with the baby and in another month or so, you’ll be back to your usual self.