What book would you write if you knew it would be pretty good?
What book would you write if you knew it would be received well — not Annual Critics Choice lists, maybe, but 4–5 stars on Amazon and a few “OMG THIS BOOK CHANGED MY LIFE!!!” reviews?
What book would you write if it might vanish softly into history, with a few nice words from friends who would say nice things no matter what but otherwise nada… but you get a four page single-spaced letter in the mail from an anonymous writer who tells you your book really did, no shit, save her life, and goes into details about how it did that?
Write the book, Heather.