It's not easy and glamorous as the highly publicized ones you and I read about. I started a project last year and every night after putting my son to sleep, then I start my project work. Most nights it's from 11pm until 2-3am. Then up at 8am to start my day job. After while, I was used to the 4-5 hrs of nightly sleeps. I tried to separate the day job from the side project. Like others said, set goals for each time you sit down to work. What do you want to accomplish. Slowly but surely you'll get your demo done then beta. There were times when I was too tire to work or think, I still sat down for an hour or two to fix a few bugs. I made sure each day I do something to get me closer to my goal, which was the beta. Bottom line is that it won't be easy at first. It's probably the most difficult thing you've ever done. Challenge yourself and push yourself beyond the limit. It gets easier as you get use to your new life/routine. And when you demo product and people start to get it, all the efforts will be well worth it. Good luck!