My advice is this: always try to look like you don't want to be there. Like Phil Ivey.

For instance, you flop the nut straight with AQ suited and a TJK flop, not in your suit. Two of the cards are an offsuit to you and you've got a pretty good feeling that one of your opponents is playing a high pocket pair that they might have tripped.

In this case, instead of concentrating on your nut straight, concentrate on the cards that beat you. Imagine them hitting on the turn or the river. How sick would that be? Imagine the board pairing, or that third club hitting. Now play to maximize the hands profit while trying to isolate other's draws.

I actually don't play live very often, so take my advice with a grain of salt, but thats my advice on the matter.