My impression is that a lot of comments are just restatements of the usual clichés: "get the first paying customer", "luck vs perseverance", "minimum viable product", "execution vs great ideas", etc.
As someone who has already asked this kind of question on HN, that type of cookie-cutter advice really isn't helpful at all (assuming you have been following HN for a while).
We need more specific, actionable advice. Here is mine:
Grab a copy of "The Four Steps to the Epiphany" by Steven Blank and apply his methodology. It's broadly a "How-to" guide on discovering who your customers are, what they really want and how to make them buy. According to your story, it seems you are focusing too much on getting PR when you really should go out your office and talk with your customers directly (instead of via TC).
The problem, then, is that every time somebody is seeking this advice, they use a throw-away account and talk about their business in vague generalities.
It's impossible to give specific, actionable advice when you have no idea about the specifics of the problem.