Fight with emotion, not for it.
Emotion is a natural instinctive state of mind produced by the circumstance that is surrounding an individual. They can also be looked at as a tool or a pathway in which choices or reactions are made, they are an impulse of habit and may not always be very logical.
How often are your own emotions fully in your control? In my personal experience with anything that I do, they are never in my control. There is very little regulation over the immediate hormonal responses. Yes, there is truth in that hormonal responses can be manipulated (diet, exercise, medications) but that too has its own limitations. The only thing that is in control is the response of the eventual uprise of an emotion, this takes first recognition and discipline of the patterns of behaviour.
When I was first learning how to fight, there were endless emotional responses. I was an angry person when things did not go my way. To my discovery, not getting ones way is the substance of fighting. My aimless anger had no place in the gym, it was a hindrance to my progression for longer than I would like to admit. I navigated the world thinking that wanting was enough. It will never be enough to at most want something, as well, it will never be a mistake when you get absolutely what you hunger for. With this realization, I was completely immersed in the exploration of what I really am as well as what I am not. This is all not to say that emotions do not have their function, they certainly do. Emotions act as an energy behind information for you and reality, they grant experience of your participation. There is a certain symbiotic relationship that we have with emotions on an elemental level, they serve us yet simultaneously they often get in our way. On the occasion where they are not serving you, you are acting for the emotion itself. There is evidence to confirm a loss of control in ones own body. When you think of anger, what colour comes to attention? Red. Why? When you are angry, your heart rate increases, blood pressure goes up along with your respirations, causing your face to have a hypoxic flush, you literally see red behind your eyes due to the increased systemic blood flow. There is a flood of stress hormones to cause all of these symptoms which you have little to do with. This is emotion expressing itself in a physical form without your permission, it is acutely powerful. It is not impossible to redirect these powerful emotions by first recognizing the repetitive and useless qualities that they can possess.
Emotion has a tendency to become habit, how you respond to situations are a directive of your habit. Habits emerge because the brain is directly trying to find the path of least resistance in order to conserve power. Every person has the capability to redirect that same power into deliberately designing their own habit of emotion. The nature in which habit of emotion functions is that they crave recognizable patterns, they are addicts to comfort which is why real change is often not sought out, a part of you has to be forgotten about and this can be a very painful process. To change is to break down your current foundation to find out that there may be asbestos hiding behind the walls, you learn that you were not as secure as you may have thought. The understanding that unwanted emotions, such as anger, are deeply rooted is essential to changing where the potential power goes. Are you going to allow your power to remain potential or are you going to use it to grow? You have the choice to allow your emotions to develop inside of your own consciousness as opposed to outside of it.