Attitude's the enemy - it can suck the vibe right out of a room and make even the most hyped crowd go cold. When I show up to a gig, I leave my personal baggage outside, just like I'm taking off my shoes at the doorstep. You gotta connect with people, make them feel comfortable, and that requires being human. Not just a DJ, but a regular person who's there to have a good time.
The second you let that guard drop, you start to read the crowd, see what makes them tick, and adjust your set on the fly to keep them hyped. It's all about empathy and observation - being that one guy who gets the party started, but also knows when to chill it down a notch. Friendly doesn't mean you're not confident, it means you're confident enough to be approachable.