In 2008 , Radcliffe revealed that he has a mild form of the neurological disorder developmental coordination disorder . The motor skill disorder sometimes prevents him from doing simple activities , such as writing or tying his own shoelaces . " I was having a hard time at school , in terms of being crap at everything , with no discernible talent , " Radcliffe commented . In August 2010 , he stopped drinking alcohol after finding himself becoming too reliant on it .