How do I appear to be a broken 40year old man when I am only 28?

I am an actor playing the biggest role of my life so far. . . I am playing the role of Winston Smith in an adaptation of George Orwell’s “1984 (** ****)”. I am already a fairly lazy person ‘I think’. I no longer actively practice or have actively practiced martial arts in years (excluding warm-ups pre-show for my last production) but feel as though forms from ti ji, wu gong, ti kwon do and many others throughout my life are so ingrained that it feels unhealthy for me to just jump or rather slow quickly into doing ‘LESS’. I just want to be able to achieve an empathectic appearance of a 40 to even late forties insecure male, if possible. Keeping in mind that I need to make this transition in the duration of one torture scene.