Insecurity is one of the most misunderstood feeling and one of the worst cancers one can get . This is a feeling of general unease or nervousness and fear that is triggered when certain situation occurs . Insecure persons are widely despised because they lack self confidence or behave badly towards others . But the snag is that very few people wonder WHAT CAUSES insecurity ? Insecurity is an result of very sad or tragic for such person experiences . Here are some examples . There is an computer engineering and IT company . You have a man who is a true genius with computers and IT . But he is exceptionally sexist to all female employees , constantly insults them , speaks with them in disrespectful manner or even beats them . We can say that this man is bad . But what would you do if you would find out that this guy had a bad luck to end in female dominated school , and since loving the computers in 90s and early 2000s was the most effective way to get into female bad books , they mistreat him , treated him as a bore and freak , they stole or destroy his IT stuff and this is how females behaved to him all his life then by logic rules you shouldn’t expect to be a casanova .