Although I'm not particularly troubled myself, I do have a lot of empathy for troubled characters.

I always collect a bunch of images for every film that I do, that reminds me of an essence of the character, or the time that they live in, or what they're experiencing.

I like to be absorbed in what my character's doing.

You definitely put a bit of yourself in every character, and you always have to have an understanding and empathy for the person that you play.