I think A Good Day is about a guy and his friends who are heroin addicts. He talks about cashing his check and visiting the "doctor" to get the drugs. He realizes that it's a habit he can't fix and he knows it's going to hurt everyone around him. However, the chorus of the song talks about shooting up the heroin and how it helps make it "a good day" anyway.
I think A Good Day is about a guy and his friends who are heroin addicts. He talks about cashing his check and visiting the "doctor" to get the drugs. He realizes that it's a habit he can't fix and he knows it's going to hurt everyone around him. However, the chorus of the song talks about shooting up the heroin and how it helps make it "a good day" anyway.