A desire fulfilled is less pleasurable than the absence of desire. ~ Da Es Atmecha (Getting to Know Your Self)
I just want to point out that this line is so so so deep and sums up many pages of this holy seifer. Read it again, think about it and internalize it.
Emuna Daily 
Perhaps the above quote needs some context. It is referring to physical desires, which we should try to minimize. A person really wants something and then he gets it. He would have been happier if he never wanted it in the first place.