Because you work at/form/in home is why you feel bad. Everyone I've talked to about working from home and every book and article I've read says that the biggest barrier to working at home is setting boundaries. While you may be at home, that doesn't mean that you have time to do things you wouldn't do if you were in a office. Mainly the articles I've read have to do with spouses who believe that since you're at home, you should be doing all the house stuff. As it seems in your case, it is happening with your kids. In my house, I close the door. When the door is closed, it's like I'm away at work. My husband does not bother me unless it is time for dinner or needs to come in to our bedroom/my office for something.