"Nada es suficiente" technically means "nothing is enough" but I think the English equivalent is more like "it's never enough." 
-------------------
Nada es suficiente
Pensaba que tan solo se podia
Echar de menos aquello que
Has tenido alguna vez
It's never enough
I thought you could only
Miss that which
Once belonged to you
Yo nunca te he tenido y sin embargo
Vivo atada a la obsesión
De perderte sin querer
I've never had you and yet
I live [life] hanging on to my obsession
Of [possibly] losing you without wanting to
Y no paro de pensar
And I can't stop thinking
refrain:
Que voy a hacer si te he dado lo que soy
Pero para ti nada es suficiente
Que voy a hacer si te he dado lo que soy
Pero ya comprendí
Que nada es suficiente para ti
What can I do if I've given you what I am
But for you it's never enough
What can I do if I've given you what I am
But I get it now
It's never enough for you
Vengo de un mundo de imposibles
Y allí los sueños son posibles
Y yo he soñado alguna vez
I come from a world of impossibles
And there dreams are possible
And I have dreamed at one time [or another]
Que tú y yo eramos felices
Y nada se podía interponer
Creo que me equivoque
That you and I were happy
And nothing could get between [us]
I think I was mistaken
Y no paro de pensar
And I can't stop thinking
refrain
Para ti...
For you...
Y no paro de pensar
Que haría si no estas
Pero esto es demasiado para mi
Saber que no puedo hacerte feliz
And I can't stop thinking
What would I do if you weren't here
But this is too much for me
Knowing that I can't make you happy
-------REPEAT-------
Que voy a hacer si te dado lo que soy
Pero para ti nada es suficiente
Que voy a hacer si te he dado lo que soy
Pero ya comprendí
Que nada es suficiente(2x)
-------REPEAT-------
Nada es suficiente
Nada es suficiente para ti
It's never enough
It's never enough for you
The secret to creativity is knowing how to hide your sources.
-Albert Einstein