Only connect the prose and the passion, and both will be exalted, and human love will be seen at its height. Live in fragments no longer. ~ E.M. Forster, Howards End
The thing, I think, that keeps people from building successful businesses, especially online, is that business seems complicated.
And it is, in the sense of having a lot of moving parts. (Which, of course, is why we work so hard to build tools that make the technical part easy.)
Like anything worth doing — raising a family, building a house, growing a garden — there are a lot of small things you need to figure out how to do correctly.
But arching over all of these is the Big Thing — and if you get it right, the details will tend to work themselves out.