Nothing wrong with the last one but knowing Noels love of a capo on the 4th fret i 
play it like this :)

Capo 4 - Chords relative to the capo

For effect hammer on and off the b string when playing the Am ( listen to the song 
for strumming pattern )


Intro: Am

Am
Someday you might find your hero
Am
Some say you might lose your mind
Am
I keeping my head down now for the summer
Am
I'm outta my mind let me pull the other
Am
I'm gonna take that tiger outside for a ride


       F  Dsus2  Am
What a liiiiiiife!
       F  Dsus2  Am
What a liiiiiiife!


Am
Keep on chasing down that rainbow
Am
You'll never know what you might find
Am
Over the sunset on the horizon
Am
Maybe you dream but it tastes like poison
Am
I'm gonna take that tiger outside for a ride



       F  Dsus2  Am
What a liiiiiiife!
       F  Dsus2  Am
What a liiiiiiife!
       F  Dsus2  Am
What a liiiiiiife!
       F  Dsus2  Am
What a liiiiiiife!



       F  Dsus2  Am
What a liiiiiiife!
       F  Dsus2  Am
What a liiiiiiife!
       F  Dsus2  Am
What a liiiiiiife!
       F  Dsus2  Am
What a liiiiiiife!



Am
Someday you might find your hero
Am
Some say you might lose your mind
Am
Woo Hoo
Am
Woo Hoo
Am
Woo Hoo
Am
Woo Hoo
Am
Woo Hoo
Am
Woo Hoo
Am
Woo Hoo
Am
Woo Hoo