Sinead O'Connor has very publicly battled mental illness over the years. But rather than continuing to let headlines do the talking, the Irish singer-songwriter sat down with Dr. Phil for a candid interview.

Throughout the special, Sinead spoke about her relationship with her abusive mother, suicidal episodes and her very complicated relationship with fame. At one point, she explained that having the number one song in the world with 'Nothing Compares 2 U' made her feel "like an imposter." Watch the interview below.