On Starting a Long-Term Company: "A lot of what goes into starting companies is turning nothing into something. Starting with a blank slate, and just inventing all kinds of stuff. You'll never know if it's ultimately correct. You just have to use your judgement, make decisions, and move on. To some people, that's pretty scary. Not to have any answers to look up in the back of the book. Just to do stuff."
This is good advice. I am keeping it here and the link for near-future reference.