I think iam going crazy I be using cocaine For years for some reason now it's not fun no more . I become so paranoid I don't enjoy it yet I still do it .I feel people is out to kill me Iam really paranoid I think I hit a breaking point .can I get some advice. .Plz.. why does it feel so real like someone is out my window waiting to hurt me and people voices talking about me . . I feel so help less. ? Any advice?