Setting Personal Self Defense Boundaries

Exactly what is a personal self defense boundary? Let us think of it as the way you allow someone to act in your presence and what you are willing to let them do.  One of the key elements in self defense is in the preparation and implementation of personal boundaries.  The concept of setting these boundaries and sticking to them often becomes the slippery slope between, "how did I get to this point?" and more importantly, "how do I get out?"  Frequently we set boundaries and when they are crossed, we simply move "the line in the sand" back farther to [...]