Baz Luhrmann's film Elvis London Premiere

The speaker reflects on the journey of preparing for a role, emphasizing the importance of finding humanity in the character. They discuss the technical and emotional challenges faced, particularly the need for specificity without losing authenticity. The experience contributed significantly to personal growth and had a lasting impact on their life.

What does the speaker mean by 'finding these keys into his humanity'?

In what way did the experience impact the speaker's life?