On 15 July 2008, Fife-Yeomans reported further, via Australian News Limited, that "While Ledger left everything to his parents and three sisters, it is understood they have legal advice that under Western Australia law, Matilda Rose is entitled to the lion's share" of his estate; its executors, Kim Ledger's former business colleague Robert John Collins and Geraldton accountant William Mark Dyson, "have applied for probate in the West Australian Supreme Court in Perth, advertising for 'creditors and other persons' having claims on the estate to lodge them by 11 August 2008 ... to ensure all debts are paid before the estate is distributed...." According to this report by Fife-Yeomans, earlier reports citing Ledger's uncles, and subsequent reports citing Ledger's father, which do not include his actual posthumous earnings, "his entire fortune, mostly held in Australian trusts, is likely to be worth up to $20 million."
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In their New York Times interview, published on 4 November 2007, Ledger told Sarah Lyall that his recently completed roles in I'm Not There (2007) and The Dark Knight (2008) had taken a toll on his ability to sleep: "Last week I probably slept an average of two hours a night. ... I couldn't stop thinking. My body was exhausted, and my mind was still going." At that time, he told Lyall that he had taken two Ambien pills, after taking just one had not sufficed, and those left him in "a stupor, only to wake up an hour later, his mind still racing".
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"Some people find their shtick," Ledger reflected on the categorisation of style. "I never figured out who 'Heath Ledger' is on film: 'This is what you expect when you hire me, and it will be recognisable'... People always feel compelled to sum you up, to presume that they have you and can describe you. That's fine. But there are so many stories inside of me and a lot I want to achieve outside of one flat note."