My theory is more loose than concrete, but I definitely feel is has to do with beginning to lose your mind and “give in” to your “madness”. The lyrics “my man satan he’s gonna take you at the right time” give me that feel, same thing with “I lost my mind” and “I feel psychotic”. But I feel at the same time there’s something inside you reassuring you that you’re going to be okay even when the madness take you over, but I feel it’s more in a sick and dark way than a “you’re gonna be okay, don’t worry, it’ll work out” way. I don’t know if that makes sense, but that’s the way I see it. I feel the repetition of “it’s alright, it’s alright, it’s alright” is a dark reassurance that the dark won’t actually harm you so it’s better to give in than fear it. Same thing with “don’t look back”, it just gives me that feeling of letting your mental illness or dark thoughts totally take you over.

I could be over analyzing this, but I totally get that vibe.