I use to remember when my name is called to stand up and fight someone, I usually shiver, heart beat increase, get very pale and my vision is narrowed by white lights surrounding it

But I have much control over it now, I already have a bit of killer instinct now and I'm glad for it, but I can still feel a bit of presence of fear, I want to get rid of it through time and I sure can make pass through it, share your experiences