Defiant and courageous, Christina Applegate opened up for the first time about her difficult decision to have her breasts removed following her cancer diagnosis. "I had a prophylactic double mastectomy," she told "Good Morning America" host Robin Roberts. "I wanted to be rid of it for me so this was the choice I made and it was a tough one." The "Samantha Who?" actress also described her initial reaction to the shocking diagnosis -- and her healing process. "Sometimes I scream and I get really angry and I get really like, you know into wallowing in self-pity sometimes and I think that's -- it's all part of healing." Keep Reading... See also: Applegate is Cancer-Free! Tips for Breast Cancer Prevention Applegate's Breast Cancer Scare Click on an image to view the CHRISTINA APPLEGATE photo gallery! ...