You can go either the all out route, and make a career out of Lightwork, or you can go the simple route and bring Lightwork into your career.
Most folks start with the simple route. Do whatever it is you already do well, and do it in a way that increases the health of everyone.
For an idea of what kinds of things humans need to have increased health, take a look at the
Hierarchy of Needs.
-Turil