The song is standard tuning. 

In the key of B. I figured out these chords by ear.

Intro Abm x2

Abm
Yes you've been on my mind,
F#
I've been drifting for quite some time and,
C#m          B
This life is paralyzing,
C#m          B    F#
This life is paralyzing,
Abm
Me I can't see through the greys,
F#
Truth has been lost in the haze and
C#m        B        C#m        B F#
I need someone to save me.

[Pre-Chorus]
Abm         B             F#      E
Truth's all I want, All I want is you,
Abm        B             F#           Ebm
You're all I want, All I want, all I want,

[Chorus]

            Abm
Cuz there's black and there's white,
            B
and there's wrong and there's right,
        F#                        E                Ebm
I can't go one more night without telling you that I am sorry 
Abm         B
For all the pain I caused.
          F#                       E                Ebm
I've been gone for so long without telling you that I am sorry, 
Abm              B                F#           E           
Can you hear me? Please forgive me!

[Verse]
Abm
I'm screaming through the noise, 
F#
Tell me you can hear my voice, 
C#m     B
I am so lost without you, 
C#m     B        F#      
I am so lost without you
Abm                      F# 
Here I need some clarity need your spirit leading me, 
C#m         B           C#m        B F#
my vision's getting blurry

[Pre-Chorus]

[Chorus]

[Bridge]
                         C#m         F#
I've been locked in this maze for so long,
            Ebm           E 
show me the way   back home,
        C#m     F#    E
Open my eyes to see you

[Instrumental] F# - Abm , B , Abm , F# , Abm , F# , Abm , B
               Abm , B , Abm , F# , Abm , F# ,( Abm )..x2

Dada dada dada da
Dada dada dada da
.... dada dada da
dadada   dadadada

F#  E
Oh, Oh..
[Chorus]

[Pre-Chorus]

[Pre-Chorus]
Abm         B             F#      E
Truth's all I want, All I want is you,
Abm        B             F#           E
Truth's all I want, All I want, all I want,

[Chorus]


            Abm
There's black and there's white,
            B
and there's wrong and there's right,
        F#                        E                Ebm
I can't go one more night without telling you that I am sorry 
Abm         B
For all the pain I caused.
          F#                       E                Ebm
I've been gone for so long without telling you that I am sorry, 
Abm              B               F#           E           
Can you hear me? Please forgive me!


Abm
Yes you've been on my mind,
F#
I've been drifting for quite some time and,
C#m          B
This life is paralyzing,
C#m          B    F#    Abm
This life is paralyzing me,