Regarding the entry I just posted, and the references therein to neurotic uncertainty over whether a book is DONE, this quote from William Strunk, Jr. (the original author of the classic Elements of Style):
It is worse to be irresolute than to be wrong.
Boy, do I hope so. :)

Funny thing about writing a book — at least if you’re neurotic enough (and I am that neurotic): you never really know if it’s DONE. The best you can hope for is that it’s done enough.
On this day in 1997, the first Harry Potter book (Harry Potter and the Philosopher’s Stone in the UK, …and the Sorcerer’s Stone when it crossed the Atlantic) came to print.