I doubt anger is an emotion that you have much choice in having. However I think it's pretty easy to deny you are angry. Most people go through their whole lives thinking they are in control of their emotions, when in fact they ignore their them, and therefore it's not really clear what is making the decisions.
I personally learnt to see the hidden anger, that way I can consciously decide what action to take, as opposed to the emotion unconsciously deciding for me.
I see anger as being about action, driving you to meet an unmet need, whether that be love, safety, respect, etc. It's a great tool to actually identify what needs/values are important too you.