

Ego, as I’ve written about before, is simply the story you tell yourself about yourself.
If the story you tell yourself about yourself is that you’re a worthless piece of shit and you don’t deserve success (whatever Read this author's blog.

There's a great book out there called "Egonomics" which touches on this very subject. (http://www.amazon.com/egonomics-Makes-Greatest-Expensive-Liability/dp/14...) It talks about the balance between self-esteem and ego, and about how it is important to have humility.
Great topic! And I love your picture.
I know a professor who claims that he can tell when someone walks into their class if they are a student leader or not because those who are tend to have an "inflated ego and try to take over the class". Having a big ego tends to hinder their academic performance when it comes to group work because they cannot view their classmates as their peers. He hypothesizes that those students with a smaller (healthy) ego tend to excel further beyond their peers.
Sadly, those people with big egos tend to not realize it until they have caused damage to others and/or themselves.