With over two million social media followers, bestselling author and speaker Lysa TerKeurst is one of the most prominent female Christian voices today. Lysa faced a devastating public betrayal and as she chose to reconcile with her husband, she invested more than 1,000 hours in a biblical study of forgiveness. Lysa shares with 9time Emmy winner David Sams about learning how to move on when the other person refuses to change, never says they're sorry and her own struggles to forgive from her new book "Forgiving What You Can't Forget." Photo courtesy LysaTerKeurst.com.