Very hard... Emotions take control right away upon seeing
"Jessica Alba" or "Wang Xin Lin". Its hard to think rationally.
Educating alone is not enough, practicing the "codes" of such is a
must from young. Then there is of course, the character and values
of each and every individual to begin with. How one is brought up,
how his behaviour works with relationship to thinking with the head
or the d**k.
Sorry, I am crude. Please forgive me. 
