Working as a DM is teaching scuba. If you are a new diver I recommend getting lots of diving in, trying all sorts of dives: cold water, tropical, salt, fresh, day night, deep, shallow, etc. and assess if this is really what you want to do [many, most people will say no]. Don't be swayed by the "DM lifestyle propaganda" it really is slog, and not romantic. If you still love it and want to spread that love to others, you may be DM material. If you love it but don't want to teach, just keep on diving, without the responsibility of helping others learn.