Wow, I have strong oniinops on this. But first, an anecdote. As a woman circulating among women of a younger generation, my mom used to be stymied when people would ask What do you do? She came from an era where women were not defined by their jobs, as few outside of Rosie the Riveter has jobs, let alone careers. Eventually, she started giving people a big grin and saying she was a part-time brain surgeon. Frankly, my answer is no, you can't really run your business part-time any more than you can parent your children part-time. When I hear part-time, I think dilettante , as if you are tucking your professional life into the small empty spaces in your world. Part-time doesn't mean the number of hours (because very few professional organizers work 40 billable hours per week), but the quality of the effort put into the hours that are worked. Janet, you're right. Parents of kids may only be able to schedule clients 10a-2p three days per week, for example, but that's not very different from a hugely busy professional who only has a few slots open m/w/f from 10a-2p. It's not the number of billable hours worked that constitutes running your business, but whether you do all that you can and must in order to sustain and grow your company to achieve the revenue levels you need/want.I admit that when one is just starting out, it may be necessary to only work a handful of hours, or only do marketing and admin on a limited basis. Sure, there will be some benefit to that, but it's like only exercising on the weekends. You may firm up a bit, but you will strengthen the necessary muscles on only two days a week. Neither can you firm up your marketing, admin and client muscles to the professional level if you're really and truly part time. Eventually, you have to put more effort forth, or stagnation will occur.Note, that doesn't mean you can't be targeted and efficient. It doesn't mean you can't delegate your bookkeeping, have a VA handle the technical side of getting out your newsletter or formatting your ebooks or booking your speaking gigs. Part-time doesn't mean that you can't accomplish a great deal; however, most part-timers complain about all the things they CAN'T do because they don't have the money, and they don't have the money because they aren't doing the essential marketing to bring in the client work to earn the revenue.Business requires investment: money and time. You can limit the money or the time, but if you curtail both, growth is almost impossible.