Behave!

modification of behavior is not as easy
as some might want you to think
the person never changes, her wants, his desires
always drive the actions,
though - the success of your modification
is in the pudding
by burying and hiding the truth
change is apparent, though fleeting
as the pendulum swings back towards the center
"Duck!" she might scream, as he finishes pushing
and the metal swing comes diving at his head