I sure don't. Personally, my outlook swings between "I'm so awesome, look at what I made" to "I am an idiot - why am I in this field?" The latter comes when I'm 2 hours into a debugging session and still stumped, or when I'm looking at code written by somebody famous, or when I get an explanation of some concept or piece of code and I still don't understand. (Rebuttals: debugging is actually hard sometimes, and that coder is famous for a reason, and maybe the explainer isn't doing a god job.)
In my rational moments, I figure that 1) I'm smart enough, but not the smartest, 2) I can always improve, and 3) I should focus more on doing my best and less on comparing myself to others.
