[margorczynski]

I think an important thing is to identify what your end goal is - is it to create some cool app and get some people to use it or create a real business. The latter is much harder and even startups/companies with big funding and millions of users struggle to do it.

And just by implementing some cool app you don't magically obtain business knowledge required to get it to the next level - probably the ability to sell stuff and marketing being the most fundamental.