All you do is play G D Em throughout.

At the end of the chorus, "Is how good you are to me", it sounds like there's a 
different chord. Maybe Am7. But you can just play the Em and go back to G and it sounds fine.

Lyrics:
G                          D
When everything's said and done
     Em
Your all I really have
       G                      D
In the midst of these setting suns
    Em
The city lights at best
    G               D
Are portraits of my friends
    Em
But they don't make amends
                    G   D   Em
For this ridiculous mess

G         D
So I will float on
Em
Every word you said
         G           D
When the water of my ghosts
     Em
They rise above my head
           G                D
And I will stand up on your back
       Em
In the middle of this sea
        G             D
When collectors of my debts
     Em
They come to sink their teeth

        G         D           Em
And its all I can think about now
                         G D Em
Is how good you are to me

[chords same as first part:

This body is a hole
My flesh one shallow grave
I am six feet below myself
And at my best
I still deserve to die
But I'll be glorified
In this ridiculous mess

So I will float on
Every word you said
When the water of my ghosts
They rise above my head
And I will stand up on your back
In the middle of this sea
When collectors of my debts
They come to sink there teeth

And its all I can think about now
Is how good you are to me