
There are so many ways to approach a character. You have to figure out the similarities between you and the character, build on them, and at the same time, blur the dissimilarities. Since you do it day in and day out, it becomes a process and a part of you.
I have songs that define characters from each film of mine. It can be a song from that particular film or something that just goes with the wavelength of the film; you listen to it, and it gives you that rhythm. I can't articulate how it helps, but it somehow gives you an understanding of the character.