You can also play Dm instead of Am - it's up to you. Am is easier to play, but I think Dm sounds more right.
Also, playing the stuff in brackets is optional, but still playable ( i think it just sounds better with them.
[Intro]
C
Hmm, hmm
[Verse]
C (F)
Wake up and smell the coffee
C (F)
Is your cup half full or empty?
C F
When we talk, you say it softly
C F C (Am C) F
But I love it when you're awfully quiet, hmm, quiet
[Pre-Chorus]
C (F)
You see a piece of paper
C (F)
Could be a little greater
C F
Show me what you could make her
C F Am C F C
You'll never know until you try it
C F C
You don't have to keep it quiet
[Chorus]
Am Em C
And I know it makes you ner-vous
Am Em F
But I promise you, it's worth it
Am Em G
To show 'em every-thing you kept in-side
C (Em) (C) Em (F)
Don't hide, don't hide
Am Em G
Too shy to say, but I hope you stay
Em Am
Don't hide a-way
N.C. C
Come out and play
[Bridge]
C (Em)
Look up, out of your window
C (Em)
See snow, won't let it in though
C (Em)
Leave home, feel the wind blow
C (F Am) C
'Cause it's colder here inside in silence
(Am) F (C)
You don't have to keep it quiet
[Chorus]
Am Em C
And I know it makes you ner-vous
Am Em F
But I promise you, it's worth it
Am Em G
To show 'em every-thing you kept in-side
C (Em) (C) Em (F)
Don't hide, don't hide
Am Em G
Too shy to say, but I hope you stay
Em Am
Don't hide a-way
N.C. C
Come out and play