Stubbornness

I wonder why people can be so stubborn sometimes, even sometimes we ourselves are being so stubborn in some ways too. 

When someone is stubborn, all he could see and hear is only all the thing from himself. He might listen to what people say or comment, but he will never accept it. He will still stand for his opinion even though he knows it might be wrong, he will also try his best to fight against and prove that other people was wrong even though he actually knows they're right. He always wants people to listen to him but he will never listen to other people, he always wants people to accept whatever he thinks and whatever opinion he has but never wanted to accept anything from other people. 

So, are you someone who is so stubborn just like what I've said? Perhaps being stubborn isn't a bad thing, but we should know the right time to be stubborn. =)