clipped from: ponderabout.com   
"Humans are creatures of habit with an insatiable
need to see familiarity in other people’s actions. 

Your predictability gives them a sense of control. 
Turn the tables: Be deliberately unpredictable. 

Behavior that seems to have no consistency or
purpose will keep them off-balance, and they
will wear themselves out trying to explain your
moves. 

Taken to an extreme, this strategy can
intimidate and terrorize." 
~ Robert Greene



The above in an excerpt from Green's
The 48 Laws of Power (1998), a best seller
that examines:

- one's ability to influence others,
  called "Personal Power", and

- those specific behaviors that lead to
  the accrual or the loss of personal power.