I have both shutdowns and meltdowns. My meltdowns have been called violent now and then. For me it was important to recognize what was setting me off. Then I needed to figure out what to do about it.. was it something I could remove from my existence, was it something I could take steps to lessen or better prepare for/recover from, was it something I could tolerate sometimes (like if I was in a clam place to begin with), and so on. I prefer to take preventative measures when possible because most of the time I cannot stop myself once I hit the explode part. Sometimes I can catch myself starting to spiral out of control (my heart rate gives me away), if I can catch it before I am past the point of no return, breathing does help me as well. Square breathing is my favorite.
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"...don't ask me why it's just the nature of my groove..."