I'm a freelance editor. I make a TV show every week and it's guaranteed work 5 days a week for as long as I want it. I also do camera jobs most weeks, or weekends. So long as I meet the deadlines on the TV show, they're flexible, and don't mind me taking the work home where necessary. That also accommodates more jobs that pay higher mid-week.
Since the editing is guaranteed work, I don't charge as much as I do for 1 off jobs, but it gives me a steady income I can count on, which is many ways is more valuable as a freelancer. I also have a good accountant friend who helps me get some nice breaks. He advises me when I should stop buying gear, and when I should buy more to make my company look more successful. I don't know how or what he's doing, but he's basically told me that since I'm a 1 man company, if I invest x-amount every year on equipment, research material and things like that, the government don't take so much at the end of the tax year. I'm not a numbers kind of guy, but it seems to be working out for me.
Like the other post here says though, I do have holes in my shoes and I cut my own hair haha.