Freelancing isn’t just doing what your craft is, it’s beyond your technical work. The technical work of your freelancing is just a part of your business of one. Too often, freelancers just think that they can do what they’re good at in their job and they will have a successful freelancing business.
The mere understanding of the technical work of the business doesn’t qualify a freelancer to run a business. If you want to be a successful freelancer, you must learn how to make your business work, rather than to do the work himself.