Eric: Thanks for sharing, and great tips. As someone who is in the same boat, I'm always curious as to how others handle the situation. I'm assuming your goal is to leverage the success of your startup so that you can leave your day job? If so, how do you keep focused on your day job, when the excitement of your startup keeps pulling more at you, especially if you are as you start to see success? I'm in a day job that I hate (its soul crushing), but that gives me the flexibility to work on my startup. The allure of my startup is always calling, but its going to be a while before we see profit, and I've got a wife and bills waiting for me at home so I do what I can to stay sane. All the best.
Growing the startup to the point where I can do it full-time is my ultimate goal. I'll admit, it's not easy to stay focused at my day-job. It's not easy to stay focused anywhere for that matter. But I've had to learn to ignore the voice in my head when it's work/family time. Again, not easy, just one of those things you have to do. Learn to live with the excitement eating away at you. My situation is probably similar to yours; my day job, while not in software development, which I'd prefer, nevertheless gives me a lot of time to work on my startup, since I work close to home and have basically no commute, meaning I get home around 5pm everyday.