I work from home almost every day, in a house with a four your old and a 1 year old. Ultimately, my wife does a pretty good job at not having them interrupt me,

I work from home almost every day, in a house with a four your old and a 1 year old. Ultimately, my wife does a pretty good job at not having them interrupt me, but often I find I have the opposite problem of hearing my wife struggling with the children and go help her. It's self-serving in a way, because my wife is generally happier if her day isn't a struggle. Often if I need to focus on something uninterrupted I'll put on some headphones with some trance/house music and pound away for a bit. This only kind of helps though, because I find it's only good if you have a lot of manual work to do where you already understand the solution. I'm often at the whiteboard for an hour or so for every 20-30 minutes of coding.