The Nine star, who has received two 'Best Actor' Oscars, said that most performers have to deal with rejection when they first start out in the industry.
Day-Lewis told PA: "Most dancers, actors and singers get treated like filth at auditions. You never forget that, do you?
"I mean every now and then I bump into some of the directors that treated me that way when I was a kid and they're all over me like a rash and you can't forget it because you're so vulnerable."
Nine is due for release early next year.