Article continues below advertisementColin Farrell dished on his past addiction struggles while chatting about his role in the upcoming thriller Ballad of a Small Player, where he plays a gambling addict.During a press conference at the 73rd San Sebastian International Film Festival on Thursday, September 25, the actor noted, "It's pretty well-chronicled now my history with addiction, but I don't think you have to be an addict to play an addict.