A bit like the chicken and the egg, but with smack-rock

I just can't decide. Are my current feelings of extreme lethargy the result of listening to far too much druggy music lately (The Jesus & Mary Chain, The Velvet Underground, The Stooges, that Strokes / NME CD)? Or have I been listening to that stuff because it's in tune with the way I'm feeling? Either way, I've got a severe case of head-haze, and thinking about it just makes me want to lie down.