British rocker Ozzy Osbourne has found an unlikely source of support in battling his addiction to alcohol and drugs - his son Jack. The former Black Sabbath singer admits that Jack, who he claims developed substance abuse problems upon filming hit MTV reality show, The Osbournes, is the backbone of his quest for sobriety. The Iron Man singer says, "I've got people who've gone through the same problems as me and who go to the same meetings that I can call, like my son. "I love the boy. I love all my children. He only started (on drugs) because when we were doing the TV show he just couldn't handle it - he was a 14-year-old kid. "He wasn't prepared for it, it freaked him out. My son is four years free, which I'm really happy about."