These chords are very minimal 
I don't recommend strumming full chords
For the most part, I play the 1 and 3 of each chord

Verse 1:

I have seen it all all

I have seen it all
      E5    G#m
I've felt it all
A          
Life is running swift now
                    E5   G#m
Like a raging river, how it runs out
              A
Please don't go
              E
Please don't go


Chorus:
                  A       C#m
Cause this is the best part
        F#
Lying awake in the dark
            A   C#m
This is the best part
                 F#
Hearing the beat of a heart

A

Verse 2:
A
I have seen it all all
A
I have seen it all
       E5 G#m
Have I felt it all
A 
Time is old and young
                            E5 G#m
Oh, glitter moments fleeting on my skin
               A
Pause in the glow
               E
Pause in the glow


Chorus:
                  A      C#m
Cause this is the best part
       F#
Lying awake in the dark
            A     C#m
This is the best part
              F#
Here in the beat of a heart
            A     C#m
This is the best part
        F#
Lying awake in the dark
            A     C#m
This is the best part
               F#
Here in the beat of a heart

Outro:
C#m//// //// |  F#m//// ////

A//// ////   |  F#m//// //// (3x)