INTRO : G  Dsus/F#  Em7  Cadd9  D

VERSE 1:

G
I keep on laughing to keep from crying
           Cadd9                G
I keep on dreaming to keep from dying
          D
I keep on trying
             Cadd9
Ain't gonna stop


G         Dsus/F#      Em7              
Get right down to the bottom of the barrel
(Cadd9)                        G
And     then you float back on top


VERSE 2: same as verse 1

We all know someone who's always hurtin'
The sun is shining they draw the curtain
One thing for certain
The pain ain't gonna stop

You get right down to the bottom of the barrel
And then you float back on top

BRIDGE:

             C7              G          C7      D      G
You know the grass is always greener in someone else's yard
        Em               A                D
And the world is so much meaner when your heart is hard

I go out walking in any season
It could be rainin' it could be freezin'
I don't need no reason
It's just so pleasing I can't stop

You get right down to the bottom of the barrel
And then you float back on top
You get right down to the bottom of the barrel
And then you float back on top

On the G chords in the verses, ("I keep on laughin'") a quick hammeron/pulloff of 
the D string makes it sound more authentic.

The CAdd9 at the end of each verse ("Ain't gonna stop") can be played with the 
following tab (listen for the rhythm)
       D U
e------3-3---------3-|
B------3-3---------3-|
G------0-----------0-|
D------2---------2-2-|
A--3---3-----2-3---3-|
E--------------------|

Credit to John Feldhaus's tab for pointing me in the right direction