Unless you have a perception of who you are as a lawyer, you will never be at ease in dealing with legal matters, clients, or courts. But if you know who you are and why you're there, all you need is the expertise and the information.
As a kid I would be put to bed when my parents had guests and because I was such a show-off I would go to my mum's room, put on her nightdress and Jackie Onassis shawl, run downstairs, go outside, ring the doorbell and pretend to be one of the guests. I'd say, 'Hello, I'm Mrs. So-and-So.'