I've gotten to work with amazing people. I would say usually we get to a point before we get into the studio where there isn't that sense of anxiety or nervousness of who they are because I don't think it would be as productive in the studio if that was the case. But maybe meeting someone like Neil Young for the first time made me anxious.
I never decide if an idea is good or bad until I try it. So much of what gets in the way of things being good is thinking that we know. And the more that we can remove any baggage we're carrying with us, and just be in the moment, use our ears, and pay attention to what's happening, and just listen to the inner voice that directs us, the better.
Usually when I start a new project there's a fear of the unknown; maybe it's a band I've never been in the studio with before. People are so different. It's almost like you need to go through the process, discover and unlock what it is that makes that band that band. And a lot of times they don't know it.