In vs Of

I feel like myself today. Like, really truely free to be me, to think to feel, the act the way I naturally would want myself to. However I have to wonder about that feeling after last night. There's a fine line that I definately encountered again at a birthday party at the Back Alley. It's that in the world vs of the world. It's so hard. I want to be able to relate to my friends who don't believe what I believe, I want to be able to understand so that I can have compassion and do things to help them that actually help...but at the same time, I don't want to be like them. NO offense to any of them because I think they're all doing the best that they can, but I have a higher motivation to meet higher standards.

So where do I draw the line? Is it ok to talk about what they talk about, as long as I don't outright encourage the behavior? Can I just make it known that I don't do it myself and leave it at that? Or do I have to avoid the conversation? Please let me know what your opinion is on this. I'd like to have a few more points of view on my situation. Thanks guys.