I'm such an idiot!
Did you ever notice how people talk to themselves when they’ve made a mistake? I am always amazed when I play tennis to hear people’s outbursts when they hit the ball into the net or over the fence. Some people throw their rackets and shout, “You stupid idiot!” Their inner parent is speaking. Psychoanalysts call it an “introject.” It’s the voice of someone, usually a parent, who was vital in our development. It’s Mom’s voice, or Dad’s voice, or maybe Grandma’s voice. It’s the voice of someone who responded to our mistakes when we were young. Sometimes it’s a sadistic voice, “Stupid!”
If a parent was good-enough and able to love and support (most of the time) when her child made a mess (literally or figuratively) then he/she is able to internalize a calm voice, a reassuring voice. Those people can console themselves, “Okay, calm down, I’ll get the next one.”