Definitely something to keep in mind (what Stout said). At this point keep your head up and confidence high, but just know that 95% (or more) of online businesses fail. The term fail in this case means that they do not generate enough revenue to replace your day job. This was something Bob Brisco (from Internet Brands) was talking about at Pubcon in Vegas last November. It is an increasing more difficult environment to start a web business, and it is not going to get easier. I think from their market research the number was actually higher than 95%... Pretty daunting odds.
But also know that you learn the most from failures and mistakes... so don't get discouraged. Treat every failure as a learning experience and you will hopefully be one of the ones that make it.