I think it's a little of both. He's been trying to go clean, but, withdrawal or whatever led him to start, is causing him pain, mental or physical. So he's going back to the acid--"I think it's rather time that you ease your pain". But he knows, ultimately, that it won't help. It isn't a way to ease his pain. But because it's the only thing he knows how to help himself, he self medicates with acid. And it's what he'll keep doing until he decides he has to fix himself.
On a personal side note, having chronic back pain, I love this song. I self medicate as well (though not with acid) and I listen to this song sometimes to remind myself that self medicating isn't going to help anything in the end. It's a very beautiful song, for an acid trip!
I think it's a little of both. He's been trying to go clean, but, withdrawal or whatever led him to start, is causing him pain, mental or physical. So he's going back to the acid--"I think it's rather time that you ease your pain". But he knows, ultimately, that it won't help. It isn't a way to ease his pain. But because it's the only thing he knows how to help himself, he self medicates with acid. And it's what he'll keep doing until he decides he has to fix himself.
On a personal side note, having chronic back pain, I love this song. I self medicate as well (though not with acid) and I listen to this song sometimes to remind myself that self medicating isn't going to help anything in the end. It's a very beautiful song, for an acid trip!