Sia Celebrates <br />Eight Years Sober The singer celebrated her accomplishment with an inspirational tweet to her followers. Sia, via Twitter The singer has been <br />vocal over the years about <br />her previous struggles. After contemplating suicide, the songwriter regrouped in 2010 and began a 12-step program. Sia, to ‘Billboard’ Her addiction provided <br />her with an escape from <br />her fame. Sia, to ’The New York Times’ Sia, to ’The New York Times’ Sia has explained that<br /> her famous wig was <br />created out of her battle <br />with addiction. Sia, on 'Carpool Karaoke'
