Brains Behind It Brains behind the Book- Tiana Sanchez by Dave Farrow November 29, 2018 by Dave Farrow November 29, 2018 ABOUT TIANA SANCHEZ: AUTHOR of “F’d Up: The Upside of Failure” and “Undefeatable: Conquering Self-Defeat”: Tiana Sanchez is the author of Undefeatable: Conquering Self-Defeat… 0 FacebookTwitterPinterestEmail