I was inspired to write this because my brother and some of his friends were having a discussion on this topic. Also, I thought the essay might come in handy some day for the course I teach on the psychology of well-being.
In a nutshell, I agree that (unfulfilled) desire is the root of all suffering, but rather than attempt to eliminate desire (an impossible task for most of us), I recommend a change of thinking to reduce unnecessary suffering.
The full text of the essay is available at:
(I originally posted this in atheism in response to this post.)