small business plans

I've been thinking about starting my own small business. Small as in just me. Obviously I'd need a plan in order to figure out exactly who / what / where / how. I have a system to support me while I try to make a living. These are good circumstances to become self-employed.

BUT there's a lingering question of where the business would come from. Who would want my services? How would they hear about me? Do I have enough qualifications / expertise to actually sell my services? It's all networking and getting over self-doubt. Unfortunately I don't have a network of contacts to rely on. I have friends and family but I don't want to abuse those relationships. Professionally, I'm kind of in the dark.

Now, I know if i spend more time consider my options and creating a great business plan I could probably get rid of some of my anxiety. Still, more concerns and questions to deal with.