To call someone cocky means you have no idea about psychology. People who put on this front do it because they are ultra sensitive, it is to hide there sensitivity. If only people would learn more about human behaviour they would understand each other better.
I enjoyed the Chris Packham programme very much, how sad to think this very successful and accomplished man, hides all this sadness. He has made this programme in the hope that people will be more understanding towards people with these issues. If it were possible to erase one thing from human behaviour, I think it should be Judgmental, and sadly it is used on an everyday basis, without people even knowing they are doing it. I had a mother that passed judgment on everyone she met, even watching TV she judged the people she was looking at, including, neighbours, family and always assumed she was right about them. How cruel, viscous and decremental is this. Everyone has a mannerism its just in the genes, you cant condemn someone because of a mannerism, none of us see our own mannerisms. Try to think before passing judgment.