Also, if you are new to this site, I wanted to let you know that I have a board on Pinterest that you might want to follow that has several pins (ideas) by other planner designers, stationery, home office decor, office supplies and planner freebies that are mostly planner related, you can view that board and/or follow here, Home Office | Planners & Stationery Favs.
A great tip Sarah shared was to encourage independence in smaller children so they can be playing alone and entertained at least for a short time while you do some work. Sarah has been able to achieve her goal of making a part-time income on her own terms with lots of flexibility. Although she tries to continually create new products, she knows that her business was built to allow for flexibility and put her family first. So Sarah doesn't stress if she can't add new products for a while. Her business works for her - not the other way around!