I read this post earlier this week about how to tell if you are a consultant or want to become one:
http://freelanceswitch.com/start/become-a-freelance-consultant/
What’s interesting about freelancing or running a professional services business is that as you work more and learn more about your trade, you start to gain expertise in your field and people start asking you questions. For example, for my web design business, people often end up asking me about internet marketing and designing for conversion and usability.