An Idol?

Ok so im sitting here watching American Idol and it never ceases to amaze me and the people who go to sing and cant even hit a note. Everyone who goes there believes that they are amazing at singing. And yet out of the thousands that try out only a few are good enough to go on to the next round. 
I think everyone has this thing that we think that we are just simply amazing at but we really just aren't. Mine would prob be waterskiing. I really like to do it but that doesn't mean that I am great at it. I really would like to believe I am but I'm definitely not.
Just a thought how interesting it is that we have a lot of misconceptions of ourselves in life and somehow we are supposed to know the most about ourselves.