Launching a startup on your own can be quite lonely at times.
At this delicate, embryonic stage, you don't even really want to discuss what you're doing with anyone, except maybe your wife. It's too early. None of the stuff is ready yet, it's all existing in your head, and there are a billion and one things to do to get it ready.
I've found a little solace in reading other startup blogs, although you start to realize just how greatly the odds are stacked against you. Most of these startups fail for one reason or another.
So you have to be okay with the idea of failure. Personally, I'm completely fine with it. I've got a set deadline and a set of things I want to accomplish in that time. After that, I'll be going back to more traditional employment, barring the extraordinarily unlikely chance that I'm bringing in enough money from the startup that it's not necessary.
It's more of a personal thing with me, a chance to prove I can do something and create something great on my own.
But it's definitely lonely sometimes.