Do you know why most self confidence building advice fail?
Because they are not based on correct psychological concepts.

I know how hard it feels when someone finds that he lacks confidence, because i have been there, and when i managed to get over my insecurities i wanted to transfer my knowledge to others so that they can become more confident.

-- M.Farouk Radwan

I was drawn to the link between lack of self-confidence and insecurities.