Egotism is not a cure for insecurity but a psychological ailment when it becomes a daily habit/ritual for some people.
Egotism is the anaesthesia that keeps people on living terms with themselves !
it might also be aanother way to cope with themselves and of their shortcomings . a kid of a black veil they put over their eyes to not see the truth
hmmm so it is safe to say that it acts like an anesthetic which numbs your senses, so one does not register the pain (one's short comings in this case).