Forbidden... according to who?

How can one deny oneself of a desire so strong?
I am in denial I suppose.
Its not that I refuse to have that thing that I want.
Its just I can't.
I am just not deserving enough i guess...
or maybe its just not my turn yet.
or maybe I am just not meant to be.
Why must one work so hard to change oneself to have that something which suppose to happen so naturally? That thing that suppose to happen in an instant, seconds?
I wish I could just stop wanting something I want deep down inside... But I just can't.