Thinking back to years ago when I did individual freelance work, I would say you are actually doing quite well to get in 30 billable hours. Realistically you pr

Thinking back to years ago when I did individual freelance work, I would say you are actually doing quite well to get in 30 billable hours. Realistically you probably need to spend 10 to 20 hours a week on all the ancillary tasks (especially doing work that will get you more, better, future clients). So if you want to have a long-term sustainable result, it's probably best to plan on at most 30 billable hours per week. (Of course, people who can disregard or don't have families and other obligations, could plausibly work an enormous amount of hours. But that doesn't seem like a great strategy, there are so many good opportunities to produce a lot of value and receive reasonable pay for reasonable total work.)