I'm in the middle of doing just that. Not earning $$$ yet. I think they key thing here is patience and persistence. That, and make sure your priorities are rig

I'm in the middle of doing just that. Not earning $$$ yet. I think they key thing here is patience and persistence. That, and make sure your priorities are right: Family always trumps business. I have a wife and 3 small kids - practically I can get somewhere between 50 - 70 hours a month in on my current project. The only time my family misses me is for 4 hours on Saturday morning. The rest of the time I'm working, is when the family goes to bed - typically from 10 in the evening to 1 in the morning. Tapering down from 8 or 9 hours of sleep a night to 5 or 6 hours of sleep takes some getting used to - took me about 3 months. Just keep chipping away at it, and make sure to speak to potential customers from day 1. The other thing that will really help is finding someone who shares your vision. One other person doubles the speed of delivery. Not an easy thing to do though (I'm still looking) Don't waste time on things that are not product and customer communications (investors / marketing etc.) Oh, and be sure to love what you do - if you're after some financial reward then you're only going to burn out. my 2 cents.