《Y.I.T.U. It's My Life》的歌詞如下：
Y.I.T.U.
It's my life,
Life is like a mountain
We'll climb up, we'll fall down
But we'll keep on going
It's my life,
Life is like a river
We'll flow up, we'll go down
But we'll keep on moving
It's my life,
Life is like a dream
I don't want to lose it,
It's so beautiful
My life,
It's not just another day,
Another moment in the same old way
I won't be a prisoner to my past mistakes,
My life is not a punishment
It's beautiful, it's beautiful
Y.I.T.U., Y.I.T.U., Y.I.T.U.,
It's my life, it's my life, it's my life
Life is like a painting,
We'll add color, we'll erase lines
But we'll keep on painting
Life is like a melody,
We'll sing loud, we'll sing soft
But we'll keep on singing
Life is like a story,
We'll write it, we'll rewrite it
But we'll keep on writing
Y.I.T.U., Y.I.T.U., Y.I.T.U.,
It's my life, it's my life, it's my life
It's my life,
Life is like a dream
I don't want to lose it,
It's so beautiful
Life is not a fairy tale of endless sorrow,
Life is not a prisoner of my past mistakes,
Life is beautiful, it's beautiful,
Y.I.T.U., Y.I.T.U., Y.I.T.U.,
It's my life, it's my life, it's my life (it's beautiful)
My life (it's beautiful)
重複 Y.I.T.U., Y.I.T.U., Y.I.T.U., 一直到副歌部分。