This is just a cover I tried, not accurate, but if you want to play the song on your 
acoustic this helps :)

Note: I put two different ways to do the first line of the chorus, but you can pick one 
and play it the same way both times.

Tuning: Half Step Down

Chords:
  Am  - C - F - G
--0---------------|
--1-----1----1----|
--2-----0----2--0-|
--2-----2----3--0-|
--0-----3----3--2-|
----------------3-|


Verse 1:
Am       C             F
It's not quite a mystery.
Am                C
I'm the one who's insecure,
F                   G
you're the one that makes believe,
           Am                    C
that we're all okay, we're doing fine,
                         F
when we're both fighting just to stay,
        G
to stay alive,
                   Am
a fragile state of mind,
      C            F
that I can't quite survive.


Verse 2:
Am                           C
Without a doubt, I need your help.
                       F
I know you've heard me ask before,
            G                        Am
but come on girl, I need to tell you now,
     C                 F
I know what I've done wrong.


Chorus
    Am                          C                    F
The only way out of here is the way I've avoided for all my life.
        Am
There's so many things I wanna say,
            C
but there's too many things still in the way.
F
I'm lost, please help me find my place.
G                                               Am
You're the only one, please lead me out of the dark.

(AAAHHHHAAAHHHHAAA)
C                           F
Please lead me out of the dark.
G                          Am
Please lead me out of the dark.


Verse 3:
    Am                      C
I'm moving on, I'll promise change,
                   F                   G
if you will let me in again, I swear today,
                 Am
I'll be a better man.
     C      F       G
I'll be who I was then.


Verse 4:
 Am
It's been a long two years,
        C
I can't change the past,
             F
I've shed so many tears,
       G                       Am
Can't believe I've lasted this long.
  C       F        G
I see now that I'm wrong.

Chorus V2

    Am              C           F                    G
The only way out of here is the way I've avoided for all my life.
        Am
There's so many things I wanna say,
            C
but there's too many things still in the way.
F
I'm lost, please help me find my place.
G                                               Am
You're the only one, please lead me out of the dark.