The $100 Startup book addresses this kind of questions quite well. It's essentially a list of study cases of people that built side businesses (some of them bec

The $100 Startup book addresses this kind of questions quite well. It's essentially a list of study cases of people that built side businesses (some of them becoming their main sources of income or even small very profitable companies) using their skills and interests. Might not give you silver bullet answer, but it's certainly inspirational and it does point out to certain patterns of how to do that... http://www.amazon.com/100-Startup-Reinvent-Living-Create/dp/0307951529/ref=sr_1_1 http://www.amazon.com/100-Startup-Reinvent-Living-Create/dp/...