Northfield Publishing's The 5 Love Languages by Gary Chapman has already sold over 900,000 copies according to Nielsen BookScan, and that number will likely be very close to 1 million after the effects of Chapman's appearance February 10 on OWN's Life Class are tallied. The book jumped all the way up to #2 on Amazon as of the morning of February 11, behind only The Legend of Zelda: Hyrule Historia, which has been a blockbuster since its publication.