How Sissy Spacek altered appearance for "Carrie"

(CBS News) Sissy Spacek broke out in Hollywood in the 1970s with the horror film "Carrie." Spacek said she got into the character by not keeping up her appearance.

"Sunday Morning": Simply Sissy

She said, "I wanted to feel really badly about myself. There's nothing like not washing your teeth or washing your face or brushing your teeth in the morning. I put Vaseline in my hair. ... That made me feel really bad about myself. And that helps with the character."

Spacek says "Carrie" was when she got to "...blast onto the scene. That's when people noticed I was alive."

Spacek is also well known for her portrayal of country music star Loretta Lynn in the 1980 film "The Coal Miner's Daughter." She won an Academy Award for the role. Spacek said she enjoyed the part because she got to meet Lynn and also sing.

Recently, Spacek has appeared in movies like "The Help," "Tuck Everlasting" and "In the Bedroom."

In her new book, the Texas native discusses her life on and off-screen in "My Extraordinary Ordinary Life."

For more with Spacek, watch her full "CBS This Morning" interview in the player above.