Rock matriarch Sharon Osbourne still struggles with her decades-old decision to cut her mother, father and brother out of her life, insisting she mourns the "death" of her family relationship every day.

Ozzy Osbourne's wife endured a turbulent bond with her dad, rock entrepreneur Don Arden, who previously managed Ozzy's band Black Sabbath, and she fell out with him after he fired the singer from the group in 1979.

She subsequently became estranged from her mum Hope and brother David, and she admits the loss has always pained her, but she has no regrets about distancing herself from her troubled family.

Sharon explains, "I cut my entire family out of my life - my brother, my mother, my father, my grandmother - and it was a decision that you never get over, you've always got guilt, you've always got the pain in the pit of your stomach.

"It's literally, when you do that and you carry it through, it's like there is a death within you, because your family is no longer a part of your life. It is like they have died... You can't even put it into words, the pain that you feel inside of you. But I had to do it because I would have probably ended up really bad, in terrible ways, I would have probably ended up in jail, and I had to do it to save myself.

"It still pains me. My father is dead, my mother is dead, my brother is dead to me... you never get over it. (But I have) no regrets."

Osbourne reconciled with Arden in 2001 and paid for his medical care as he battled Alzheimer's disease for the final three years of his life. He died in 2007.