Huge NIN fan here, but my fave lyrics for a while now have been - Only:

I'm becoming less defined as days go by

Fading away

And well you might say

I'm losing focus

Kinda drifting into the abstract in terms of how I see myself

Sometimes I think I can see right through myself

Sometimes I think I can see right through myself

Sometimes I can see right through myself

Less concerned about fitting into the world

Your world that is

'Cause it doesn't really matter anymore

(No it doesn't really matter anymore)

No it doesn't really matter anymore

None of this really matters anymore