When building awareness, the first "stage" is pretty similar to paranoia from what I know. But that mostly passes with time. I guess there's mainly two things you can do:
1) Learn to adjust your "paranoia" to the threat level. Which places are so dangerous that you need to be on yellow alert all the time, which places are secure enough that you can relax or even "switch off your radar" and just enjoy yourself? Being able to take a break from the paranoia can do wonders.
2) Consciously practice / tune your awareness. Although that sounds contraproductive at first, it allows the "scanning for danger" to become unconscious, become second nature. When you're that far, it's not so much a matter of "being aware
or enjoying the evening" but of how to best do
both at the same time.
I'm not sure if it's possible to party like the "sheep" once one has become aware of that need for awareness (well, you know what I mean
), but I'm sure it's possible to come pretty close.