Lyric discussion by Yrtlzmo 

I think this song is about drugs, and how using them were the "good times" and then he found out that all that drug usage was killing him. Hence, "The good times are killing me".

He also says something which suggests addiction, to most likely coke or methamphetamines, when he says this:

"Have one, have twenty more "one more"s and oh it does not relent "

I think he's talking about saying this is his last time snorting coke or whatever it may be. He says it's one more time, but it's not which is why he says have "have twenty more "one mores"".

That's just my view, I'm not positive though.

"Have one, have twenty more "one more"s and oh it does not relent "

I think this line is saying that he'll only 'have one more drink/hit' many more times that he intends to.

Like, when you're at a party, and you say "I'm only going to have one more drink" and that quickly turns into you getting drunk.

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