Yes specialize, then develop great content on a blog around that specialty where you can draw an audience (How to get my marriage back on track; how to find my dream career; how to survive my teenagers powerfully) and capture email addresses and send great email that help people. Then sell them into an offer an video training course that focuses on solving 10 top top pain points of that speciality. And provide a moderated discussion forum. And give out weekly homework by email.