I am not sure is it possible but...
I need a curse to force me to imagine the cock of the nearest seen or listened man.
In example if i hear a man's speech, to imagine how his cock and balls are vibrating till he talks.
Or, if i see a man walking to imagine the movement of his cock under his clothes, or if sitting or laying to imagine the position of his cock. And to think about his size, his weight...
Every time when I imagine the man's cock, i'll feel that my cock is shrinked more and more. And in this case to feel a big respect to the man, and in same time to feel ashamed of my litlle shrinking cock.
So, this have to be increased in the time and to become more and more addictive. As a result the cock to be the main focus to any man.