作词 : Justin Bieber/Jason Boyd/Nasri Atweh/Adam Messinger
 作曲 : Justin Bieber/Jason Boyd/Nasri Atweh/Adam Messinger
Some days I move like water
Some days I burn like fire
Some days I wanna push further
Some days I wanna do nothing
And I just wanna be the best of me
Even though sometimes we may disagree
So that I can be the best for you ooh
That's all I wanna do
I'm going through changes
I'm going through changes
Though I'm going through changes
Don't mean that I've changed
Sometimes I go to sleep early
Sometimes I can't close my eyes
Sometimes I smile like it's all good
Even though there's pain underneath it
I just wanna be the best of me
Even though sometimes I forget to breathe
So that I can be the best for you ooh
That's all I wanna do
I been going through changes
I'm going through changes
Though I'm going through changes
Don't mean that I've changed
Yeah I'm going through changes
I'm going through changes
(Oh yeah I am)
going through changes
(That's why)
Don't mean that I've changed
Oh woah ooh-ooh
La-la-la la-la
La-la-la la-la
La-la
I'm going through changes
No wise I changes