This is the problem with the whole just be confident that shitbags throw at us. What happens if you are confident and you get a look of fucking disgust? What happens if you are confident and the ugly fat cashier cunt smiles and gazes into the eyes of the decent looking guy in the queue before you but then doesn't even look at you when she serves you or looks right through you? What happens when you are confident and approach a girl and she insults you and says "You honestly think you have a chance?" or some other cunt line and this happens time and time again every time you try.
All of the above has happened to me when I have felt my most fucking confident.
Little secret but whenever a girl looks at me with disgust or looks past me at another guy and I can get away with it I call her an "ugly cunt" or a "dog" under my breath just enough so that she hears it and is shocked and walk away leaving them questioning themselves and/or angry. If they are going to ruin my day why should I not be able to ruin theirs?