Aside from starting on and solving business problems, I think it's hard to tell where to start. I think it might be worth adding that aside from the cliche "so

Aside from starting on and solving business problems, I think it's hard to tell where to start. I think it might be worth adding that aside from the cliche "solve your own problems" that you'd typically get. One possible approach might be to look at technical problems you're interested in solving and figuring out where tech like that is used and working your way down to the business case like that. This of course applies to the programmer out there. For non technical, it might be worth mentioning starting from hobbies you enjoy and blogging about those. From that you might be able to explore and ask different kinds of questions that people might have. Your best business idea will probably come by accident. It may not be an optimal approach, but it definitely got me started.