Lucille Shackleton, a relationship therapist and sexologist known for her book 'All In', shares insights on healthy conflict in relationships. She dispels the myth that arguing is a sign of trouble, revealing that respectful disagreements can enhance intimacy. Lucille discusses the importance of 'clean fights', effective communication, and emotional validation. She highlights how accountability and understanding different repair styles can lead to constructive resolutions. Ultimately, she encourages self-awareness and emotional regulation for lasting relationship harmony.