I work at the store, I work at the coffee house, I work in the yard, I work online, and I work at the school. Everywhere I go, there is work to do. Some days I spend an hour or so driving to places to make contacts or meet customers or get to trade shows. All of this is work, which means it's also a tax write off, but I have nowhere left to relax.
There seems less time to relax as well. When you work for someone else you go there, enjoying your music on the way, do your job, then drie home and you're done for the day. When you work at home you think in the car, you answer emails from bed, you text in the parking lot and you take calls in the grocery store. It can take over your whole life if you let it, and there's nowhere to hide because your house is your office.
Sure, turn off your phone, if you can. It might work for a while, but then an idea will occur to you, or you'll check the computer instead, or someone will knock on the door to pick up something. Then, even if you turn it all off (good for you! You have stronger will power then I do) there is still house work, and being a mom left.