Pop star Mariah Carey has no regrets about her infamous 2001 nervous breakdown, now describing her public disintegration as an emotional "breakthrough". The Without You singer was treated for extreme exhaustion in July 2001 following her eccentric behaviour during a couple of public appearances. But Carey insists she needed to "hit rock bottom" to comprehend what her non-stop work ethic was doing to her. She tells American magazine Interview, "I'm far from perfect. I'm still learning. I overworked myself, and I paid the price. "I consider the breakdown a breakthrough. I needed to hit rock bottom. I needed to understand the cost of pushing so hard; fighting so hard against the system. "But was I out of control at that moment? Yes."