Lennon and Maisy sing the song accapella on the show in episode 2X18 and I just found 
the chords :)Look up the song for the strumming pattern but I am   just using a downward strum.

CAPO on 1st fret for the original.

        D                D
I will bend and I will sway
         D                  D
I will fight to stand up straight
                A
When troubled winds blow my way,
          D
I won't break.

        D                D
I will hope and I will love.
        D                  D
I will give 'til there's enough.
            A                 A
That's the life I'm dreaming of,
             D
I won't give up.

          D              D
I will stumble, I will crawl.
         D                   D
Bang my head against these walls.
         A                  A
In the end I won't have it all,
                 D
But I'll stand tall.

        D              D
I will sing, I will shout.
             D                D
Let these words fly from my mouth.
        A                     A
I will live what this life's about,
           D
With or without.
         A                     A
I will live what this life's about,
          D
With or without.