Love yourself

I just read a short article about loving yourself,
here I quote its first paragraph:

"Why do many people continuously get trapped in the vicious circle of relationships based on infatuation? It is simple: they do not love themselves, and therefore they are willing to forfeit their individuality, including their wants and needs, just to have somebody in their life."

(you can read the complete article here)

Of course the conclusion is: we have to love ourselves.
But from this point I come up with other question:
what will happen if we love ourselves too much?
I guess many of us even don't realize that we love ourselves too much..
(i.e: narcist people? :p)
I think, when you love yourself too much, it means sometimes you don't want to hurt yourself..
It means also, when you hurt other people, you probably will deny it,
then you will try to do something for those people, not to make them feel better but only to make yourself feel better..

Confusing? :p
The next question is; how can we know that we love ourselves too much?? hehe.. :D