Here’s an excellent example of someone who carved out a niche and made a career of it.
Meet copywriter Valerie Haboush. Her B.A. in Journalism led to jobs in public relations, corporate communications, advertising copywriting and, ultimately, she found her way into the specialization of writing about real estate.
Is there some aspect of design, writing, marketing, photography, or illustration (that you are particularly good at) that might provide a similar opportunity for specialization