At the end of each working day, turn off your computer. Not only will you save money on electricity, you will be far less tempted to work during the time you've set aside for family.
Working from home can mean that the lines between work and home can be easily blurred. Even if you only work part time, children may perceive that you "work all the time" (as I will admit my kids have said about me) because, unlike kids whose parents work in and office, they see you work. Working when you say you will work, and not working when you say you are going to spend time with family is an important ground rule. In the long run, kids will learn to trust that they will get their time with you and respect your work rules. And we all know how one quick email can turn into a long conversation. So just shut it down.
For more work-at-home mom tips, sign up for my free WAHM newsletter.