Those Were the Days... (1995)

A gangster get mixed up with drugs after witnessing a friend killed during a gang fight. A Drug (Heroin) addict, he encounter several obstacles including humiliation from a corrupted police detective and depature of his loved ones. Eventually he turns over a new leaf when he meet a ex-drug addict and seeing his girlfriend leaves him. Now he gets an award for charity and he continues to preach to drug addicts to kick the habits..