I am a firm believer that children learn through emotions and then grow to know cognitively what the experience is about. In adult, it is the other way around (most of the time) as learning cognitively and then having it embody or get it emotionally. This is my personal understanding of the world and maybe through the lenses of trauma as I cannot feel for those who never had fragmented or traumatic childhood...maybe they are firmer and feel things like a child emotionally and then see it cognitively. I do not know what I do not know.
What I am trying to say is this a child to cry in fits of rage is a very serious thing if you look at it as an adult view of things. You may not remember everything but something happened to you and it could have been traumatic or misunderstanding but in child's eyes that can be abandonment or something huge happening to them.
Now as an adult the question is where are you stuck sort of in this long line of regulating or dysregulating? It is obvious you can verbalize the emotion. It is obvious you can feel it in your body as rage but where you stuck, IMHO, is your somatics (which you may never recall if this experience happened when you were so young - preverbal- but that does not matter since you have the evidence in emotional outbursts or rage like behaviours)....but it is important to note. The other is your imagination. You are afraid of your emotions...that is because the experience may be so far so you do not have symbolizing way of experiencing it. You are imagining your emotions so concrete to make you scare but what happens if you start to experiment with your rage to see it as information as alert system of something you do not know.
I think this is what
@Annalyn78 says comes handy. Use your imagination to play with the meaning of the rage to take the edges off rather than giviing the honors of it being real (unless it is real and you are living conditions that are abusive), if it is body memory you cannot recall, then one of the ways to experience is to play with it in art, in sport, in kung fu!
Hope this makes sense.