If you ask any entrepreneur if they've ever had a business that's failed, you'd probaby have a hard time finding one who hasn't.
Many businesses fail. It's the nature of the business--no pun intended. But many of those businesses are ones that probably never see the light of day anyway.
Years ago, I started a resume-writing company. I had big dreams of what I wanted to do, how I was going to advertise, but there was something missing: I failed to do any actual research into running a business, let alone how to market one.
If I had met accomplished authors such as Seth Godin or Dan Miller back then, I guarantee the business I started would've turned out different. I possibly wouldn't have started it. Or, if I had, I would have had some marginal success.
My marketing plan consisted of putting an ad in the local paper, which included a free ad on their website. It wasn't much, a few dollars here and there, but it added up after a few months . . . and guess how many bites I had.
My plan was to get them to request some info, I'd send out a packet to fill out for a resume . . . and that was it. No follow-up. Nothing.
If you're going to have a business, check out there two guys: Seth Godin and Dan Miller. They'll give you both the tools and the inspiration to start with, and they'll give you the names of several others to read as well.