If I've heard it once, I've heard it a thousand times "When my business gets big enough, I'll worry about that. Right now I just need to ..." you fill in the blank. It our hurry to get our business up and running, we ignore the obvious steps of learning about business and sketching out some basic plans.
Yet, when you talk to people who've made it down the road a ways, most of them will tell you they would of spend less time, money and stress if they'd just learned and planned a bit more.
My sense of things is that the "Hurry Up" mentality is moving in the direction of "Fill In the Blanks" as you go. It's becoming "OK" to Learn as You Go and Make Plansto guide you as you create and launch your small business.
I'm not suggesting you slow down, keep up a brisk pace, but save yourself some time and energy now so you're not worn out and out of cash later.