Standard (EADGBE)

Intro

Repeat the above a good few times using finger picking

(a thumb comes in handy for the F note).

Rest of song:

Most of the song just alternates between an F and a G.

For the two tense "breaks" in the song, fiddle with an Am like so:

Alternate between the two chords above for these breaks.

And then you get to the "Me myself again" bit where the chords go:

And then back to F and G.

Things to try/note:

Try leaving the G string open during ALL the chords in the song.