“Our job is to make manifest the story, to be it. In a sense, the theatre is such a big star itself, bigger than any Shakespearean actor I could hire, that we should take the opportunity to fill it with voice and verse and movement, not interpretation.” -Mark Rylance
Great parts make great actors. Not the other way around.
If you wanna be great, find the great parts and play them.
Better yet, let them play you.