It helped me out a lot. I was pissed at everything during high school and this book helped me get over it, if only because of the introduction (that is, the introduction in The Bachman Books), where King says something like, "don't be an asshole and pick up a gun; pick up a pen instead." So, since I don't have it in me to kill my school, I did it on paper. Very theraputic.
And what is this mystery original title, by the way?