Just be yourself and present yourself professionally.

There will always be great guitarists and great artists. There are reasons these people get to the top (luck rarely being one of them) and often they deserve it. Maybe their playing isn't as good as the dude at the local high school, but their skill isn't close to the only thing that got them to where they are.

I do think its a shame when some artists "make it" and then sort of fade away. But I think its because they lost their drive. This is why the superstars out there have long careers. They keep finding something to take to the next level.

Or well, that's how I feel :)