When I'm sober I'd say I'm very self concious and I get very worried about what people think of me. I think this is much like your "Perfectionism", so you're not the only one. When I'm high though, I tend to relax more, and I tend to be more comfortable with the situation. But, sometimes I don't relax and it leads to a not so good high.

I think Coelho asked some very good questions. Get those answered and it will help solve your problem tremedously.

Keep us posted on how it goes!