On myself

I got a reminder for some networking site from God-knows-which-link, I usually ignore such mails, but for a change went to it, I checked and found that I had written this about myself :

"Am very cool, honest, responsible. And am quite polite and never politically correct! There are very few things in the world I am scared of; love my family, have great friends and love music, reading, writing. Have a great urge to see places..."

I mostly find myself self doubting and unsure about most things, but when I write something about myself, I appear to be so perfectly sure, I wonder how. I wonder why. At a later point when I read it, it looks most amusing to me! I wonder why. I wonder how.