Photo by Cara Lopez Lee    A few nights ago, for the first time, I stepped in front of an audience of more than a hundred, without book, paper, or index card in hand, without a memorized song, dance, or play in my head. Just the mic and me. The place was in Los Angeles. The theme was Heat . The event was StorySlam. An organization called The Moth  puts on these competitive events all over the country. The premise is: “True Stories Told Live”… no notes.     Are you kidding?!     When I first heard of StorySlam  it sounded petrifying. I didn’t even want to watch. Why? It might be like watching amateur trapeze artists perform without a net: could be beautiful, could be painful.     Then I started taking long drives to visit my sister, and on the way back I listened to The Moth Radio Hour  on NPR. These storytellers mesmerize. Each spends 10 to 15 minutes revealing their most frightening, embarrassing, grief-stricken, weird, dysfunctional moments. Their stories  are inspiring, hilarious,...