Well, stated that way.. it's a easy one.. you have to create a point of delineation according to my teacher.. you declare the world in here ME and the world out there THEATERE.. he uses the concept called a rose..
Technically there's a little more to it.. as it involves your aura and creating a bubble of energy.. perhaps you can pick that up from his website.. if that helps
The idea is once you've created this point.. you won't allow others to bring down your vibration or for them to stick more things on you.. you can also once creating this point.. give back peoples energy or take back yours.. something like that