Have a Nice Day!: A Tale of Blood and Sweatsocks is an autobiography of former wrestler Mick Foley. It details his life all the way from his upbringing in New York to winning the WWF Championship from The Rock in December 1998. Foley had originally wanted the book to be called simply Blood and Sweatsocks, but this was eschewed in favor of his long-time catchphrase Have a Nice Day!, with the former being worked into the sub-title. The book debuted at #3 on the New York Times Best Seller List on November 7, 1999 and reached #1 on December 5.

The book is followed by three sequels. Foley is Good: And The Real World is Faker Than Wrestling released in 2001, wraps up the rest of his career and gives a behind-the-scenes look at the making of Have a Nice Day!. The second sequel and third volume to the Foley autobiography is called The Hardcore Diaries, examining Foley's various returns to WWE and giving an in-depth look at the build to a match at the 2006 ECW One Night Stand pay-per-view event, was released in March 2007; It was followed in 2010 by Countdown to Lockdown: A Hardcore Journal, about Foley's departure from WWE, and giving behind the scenes build to a match at the 2009 TNA Lockdown pay-per-view event.