Mackenzie Phillips believes she had `` genetic predisposition '' to substance abuse . Dad showed her how to roll joint when she was 10 , she tells `` Today '' show . ` And then on weekends at my dad 's place , I would find Mick Jagger and Donovan and the Beatles hanging out . She says he taught her about the dangers of drugs and alcohol but also gave her a sense that it is OK to be yourself. ` One Day at a Time '' Watch Mackenzie Phillips on Larry King Live , Wednesday 9 p.m . ET .
Mackenzie Phillips believes she had `` genetic predisposition '' to substance abuse . Dad showed her how to roll joint when she was 10 , she tells `` Today '' show . She says he taught her about the dangers of drugs and alcohol but also gave her a sense that it is OK to be yourself. ` One Day at a Time '' Watch Mackenzie Phillips on Larry King Live , Wednesday 9 p.m . ET .