Jack Osbourne learned from Ozzy Osbourne's "mistakes" as there were times when the late Black Sabbath star "wasn't the greatest parent".
The 40-year-old TV star has opened up about his relationship with his father - who died in July at the age of 76 - and revealed he didn't always have the best relationship with the rocker because of his long-running addiction issues but he's determined to use the good and the bad to make him a better dad to his own children.
