Use the OED to locate, and date, the use of the word "shattered" to describe an emotional state."
 
1930 A. CHRISTIE Murder at Vicarage ii. 14 How tiresome everyone is. I feel shattered... If only I had some money I'd go away. 1968 Listener 12 Sept. 337/2, I came in at tea-time, I sat down and I was absolutely shattered. 1978 S. RADLEY Death & Maiden viii. 75, I honestly can't tell you anything about Mary. I'm shattered, that's all I know.