Eric Roberts says his addiction battle led to him losing his daughter Emma Roberts. The 68-year-old actor – who has been open about his past struggles with drug use – split with his ex Kelly Cunningham when Emma, now 33, was just a baby, and he lost the custody battle at the time. In his new memoir ‘Runaway Train: Or the Story of My Life So Far’, he wrote: “Of course, the biggest consequence of my drug use was losing Emma.” He also acknowledged the impact his addiction had on his relationships with his sisters Julia and Lisa Roberts. HHe added: “I wouldn’t be surprised if they suffered from PT…