"matigas ang ulo" when a person is hard to deal with
A person being hard headed is hard to command or telling to do something. For example, a person wants or maybe your best friend wants to do solitaire then you tell him it is bad for his/her future he does not listen to you. What do you do? spank him hard? kick him? or maybe just tell him that this is making you angry? hard headed can also make you angry easily. That is why i try to control my temper most of the time. But sometimes someone over hard headed me that is why i shouted in anger to her that she makes me mad. It depends you have to control or release your anger 

Hope this helps^_^
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