The song has a very Reggae-like feeling to it.  
Throughout the verses you should strum the chords only on the off-beat.  
Intro: Dm  C - G 
Verse: 
Dm                      C   G 
   I'm lying in my room 
Dm                        C   G 
   Back's against the wall 
Dm                       C   G 
   The voices in my head 
Dm                       C   G 
   Playing with my heart 
Dm                          C         G 
   They say the drink won't drown you 
Dm                            C      G 
   Smoke won't burn your eyes 
Dm                    C           G 
   Idle hands are the devil's playthings 
Dm                             C      G 
   Now the world starts to fall 
F            C 
  Moon never rises 
Gm            Bb 
  Stars don't shine 
F                  C 
  Walking thru the darkness 
Gm                    Bb     A 
  Until these days of sorrow pass on by 
Pre-Verses: Dm - C - G 
Verse: 
Dm                          C   G 
   Outside birds are singing 
Dm                      C   G 
   Flowers start to bud 
Dm                              C   G 
   The vines have nearly covered 
Dm                          C   G 
   The place we used to rest 
Dm                        C   G 
   Forgotten and forsaken 
Dm                       C   G 
   The day my lover left 
Dm                       C   G 
   Sweeping up the ashes 
Dm                       C   G 
   Scattered by the wind 
F            C 
  Moon never rises 
Gm            Bb 
  Stars don't shine 
F                  C 
  Walking thru the darkness 
Gm                    Bb     A 
  Until these days of sorrow pass on by 
Outro: Dm - C - G 
     Dm       C        G        Dm  C  G 
Sin amor la luna no brilla en m           Repeat as often as you want to. 
That's it.