Frustrations on the first "official" leap

I've been checking out ycombinator on and off for a couple of years, watching the inspirational videos and reading the news, but this is my first thread. I felt compelled to vent my frustrations about my experiences. After winning a couple of university sponsored business plan competitions (two separate ideas) and getting this feeling of "I just might make it in the start-up world" I decided to leave my first job (after 5 yrs) last March and launch a start-up. (SIDENOTE: the other two business ideas went nowhere due to late-to-market and patent road-block discouragement... some may say that's silly). Anyway, we launched the company (a web-based lead generation/broker for a niche service sector) in March with a team of 3, and we later added another guy to help us out with tasks here and there. I am the only one that quit my job to work on this, and the 4th guy was unemployed so we figured we'd help him by giving him an opportunity to be part of something, and get help in return. After several business operations restructuring efforts, zero revenue from freemium (put our name out there) models, and feelings of not being on the same page in life with everyone, I now find myself discouraged. I feel like the rest of my team is treating this as a pet project, simply due to other commitments going on in their lives. I feel like everything is hanging by a thread, and I'm the one holding it. I'm approaching my stop-loss limit soon and I feel like I'm just gonna turn the lights off soon and walk out. Risking big and falling on your face is something that I really don't want to experience, but I seem to be headed in that direction. advice?