I know that people make a big deal about playing live, because the crowd is there, and the pressure is on, but here is a truth they don't tell you.
Unless you are playing an event with fellow hard core gamers there is nothing on the planet that can make you feel more insignificant than playing live in front of casual game players.
From my experience you are treated like a ghost 95 percent of the time. Life is happening around you, but you are not part of that community.
So the hardest part is not blocking out the attention, but blocking out the lack of attention.
Well at least it is a reality check when you realize that 99.999% of the general population doesn't care in the least for what you do.