I saw this article on Hacker News today: Successful People Start Before They Feel Ready. It's really just a collection of anecdotes about Richard Branson, but I think the author makes a worthwhile point, and it's actually a point that Pat Schulte makes in Live on the Margin. Pat also says, paraphrasing, that to wait until you're ready, is a perfect recipe to never actually go. So anyway, good reminder today.
Undaunted by the risk of overpreparing, however, I did continue to forge ahead in TMCS (The Modern Cruising Sailboat).