I could not agree more with Luke Johnson here: A Bluffer's Guide to Starting a Business. I think this is relevant not just for entrepreneurs but for anyone wanting to try something new, whether it's a new job, a new recipe, a new skill, whatever. But would-be entrepreneurs in particular should know that possessing unreasonably high amounts of gumption is a strength.
I read Johnson's piece last week and today saw another terrific NY Times blog post along the same lines, also about faking it and making it.
Neither of these reads as cheezy Hallmark-moment "inspirational" claptrap. It's all about roll-up-your-sleeves-and-just-do-it persistence.