"Why the imp in you brain gets out" is an interesting NYtimes-article on the psycology of unwanted thoughts. Trying to banish the desire to get high or fucking that girl will only make that impulse return as a compulsion. Back in the day when I studied hypnosis I learned that the brain doesnt really understand negatives. Thus I will not simply becomes I will.
There are three very effective tecniques for extinguishing sense-desire: Indulgence (I will get high), replacement (how hot is my wife!) and the attainment of nirvana (good luck with that).
Todays picture is plate 10 of the Rorschach-test.