When I'm in a karaoke bar, I usually don't get the courage to go up there until someone really awful goes. Then I don't feel as if I'm wasting the crowd's time.
As I was reflecting on this, I realized that this is my approach to life in general. I have done a lot of stuff in the last few years (take care of an infant, buy a house, start a business, forecast interest rates) that would have terrified my 20-year-old self.
And how did I overcome that feeling of inadequacy? It's certainly not that I got more competent (though I did). It's rather that I realized all the other people currently doing those things, don't know what the h*ll they're doing either.