This is for boys and girls.
When I tell guys that they are measure of all things, they think I'm telling to them to be conceited jerks who think they are always right and others are always wrong.
And that's bullshit.
It's like girls who have the "princess" syndrome. Yes, thinking you are the center of the universe is a bad thing.
Thinking you are the center of YOUR universe is, however, a good thing.
The difference is that when you think you are the center of the universe, you think others owe you something and you have no respect of them. That's conceit.
When you think you are the center of YOUR universe, you judge others based on how useful and compatible they are to you, but you also recognize that they are masters of their own domain.
You recognize that in order to get, you have to give. It's just that you know what you have to give is valuable as opposed to not enough or too good to give anyone for any reason.
Simply put, entitlement and conceit is thinking your shit doesn't stink and everyone else's does. Having low self-esteem is thinking everyone else's shit smells better than yours. And high self esteem or confidence is knowing your shit stinks, but everyone else's shit stinks equally bad.