Primarily, what is most important, particularly if you are in a less than desirable area, is that you ensure no harm can befall you. One method, found useful by me and my buddy the Nagual, is a specific dance used by the Cree tribe to ensure, for lack of a better word, safety:

"We can dance if we want to, we can leave your friends behind 'Cause your friends don't dance and if they don't dance Well they're no friends of mine."

Good luck, kid.