Make the enemy live up to its own book of rules.
As an organizer I start from where the world is, as it is, not as I would like it to be.
Never do for someone what they can do for themselves.
Never let a crisis go to waste
The Prince was written by Machiavelli for the Haves on how to hold power. Rules for Radicals is written for the Have-Nots on how to take it away.
Whenever possible, go outside the expertise of the enemy.