This is the one of the most important exercises in A Course in Miracles. As we learn to let go of our defenses, we experience emotional neutrality that guarantees a greater peace in our relationships. As we release our own triggers, we trigger other people less as well.
In my defenselessness my safety lies.
You who feel threatened by this changing world, its twists of fortune and its bitter jests, its brief relationships and all the "gifts" it merely lends to take away again; attend this lesson well. The world provides no safety. It is rooted in attack, and all its "gifts" of seeming safety are illusory deceptions. It attacks, and then attacks again. No peace of mind is possible where danger threatens thus.
The world gives rise but to defensiveness. For threat brings anger, anger makes attack seem reasonable, honestly provoked, and righteous in the name of self-defense. Yet is defensiveness a double threat. For it attests to weakness, and sets up a system of defense that cannot work. Now are the weak still further undermined, for there is treachery without and still a greater treachery within. The mind is now confused, and knows not where to turn to find escape from its imaginings.
It is as if a circle held it fast, wherein another circle bound it and another one in that, until escape no longer can be hoped for nor obtained. Attack, defense; defense, attack, become the circles of the hours and the days that bind the mind in heavy bands of steel with iron overlaid, returning but to start again. There seems to be no break nor ending in the ever-tightening grip of the imprisonment upon the mind.