Oprah talks with Oscar-winning actress, mother and wife Julia Roberts, who shares the most daring thing she's ever done, the top quality she taught her children and when she feels the most vulnerable. Julia opens up about her private life, including the truth about her 16-year marriage and how tabloids affect her family. She talks about a negative Instagram experience and what she believes are the neurological effects of social media. Julia reveals the surprise her husband, cinematographer Danny Moder, orchestrated for her 50th birthday. Julia explains why she's living a dream starring in her new Amazon series, "Homecoming," based on the psychological thriller podcast of the same name, and starring in the movie "Ben Is Back," co-starring Oscar-nominated actor Lucas Hedges. Julia also opens up about her spiritual practice, the lesson that took her the longest to learn and what she's most grateful for. Part 1 of 2.