You do it to yourself, you do
And that's what really hurts
The song is one of the heaviest on The Bends, perhaps reflecting the aggressive, accusatory nature of the lyricism.
Thom Yorke called this song:
"a competition between me and [Radiohead guitarist] Jonny to get as many chords as possible into a song."
It is a very melodically diverse tune, featuring a variety of chords that thread together chromatically and wander in and out of differing musical keys.
The chords used in the verse and chorus stretch all the way up and down the neck of the guitar:
Am, G#, Eflat, F, Bflat, G, F#, C