Set Your Business Hours
You can’t expect your 4-year-old (or even your teenager, really) to just “know” that when you’re in your office, you’re pretty much off-limits. It’s up to you to set that precedent.
Get it done: Hang an “open” and “closed” sign on your office door, or near your work space if you don’t have a separate office, to clearly let your family know when you are working and when you’re off duty. If you’d rather not spend money on a sign, try making one yourself. (Otherwise, this one is super cute!)