Hello Amelia, when I was chasing assignments, the bulk of my time was spent marketing my services to anyone I wanted to shoot for. I am a freelance photographer and as such I was always looking for new clients. So 80% of my time was spent marketing, 20% was spent actually using a camera. I would say I spent around 30 hours a week on my photography, on average. Now that I am retired, I spend about 30 hours a week working on a coffee table book about a cattle ranch. I hope to have that project ready for the printer around the end of June. Again, I spend 20% of my time shooting for the book with the other 80% editing, organizing images and looking for a publisher.
How many hours you work really depends on you. What do you want to accomplish and how hard do you want to work.