I Doubt, Therefore I Think testo

I close my eyes, dear, and begin my life
You know sometimes, I fear, I'm not even alive
I'm just a breath in time (but I could be more)
I'm just a waste of time (and I can't tell what I'm good for)
The explosion awakes me at night
And I have trouble accepting the fact that you might
Will you walk away from me? Will you walk away?