Doing a job versus running a business is a big difference, here’s how:

When you work a job, someone else brings you the work, you do it, someone else takes care of billing. Someone else takes care of everything that isn’t doing the actual job.

When you run a business, all that becomes your job too.

And that means, regardless of which business you’re in, suddenly you’ve got a new job, one we can all relate to (those of us who run a business), and that’s running a business. Which is mainly marketing and selling.