Hi vanx,
You could try mindfulness to eventually become conditioned to the triggers

It helped with the anxiety that I had on switch on / switch off days. I probably already told you that but just to get it context for others.
But it doesn't feel like a success, because my ideal self is super cool, calm, and collected.
I like your idea of being super cool and calm, some people get surprised in real life with how I don't emotionally react because I'm conditioned, I can relate with feeling like you haven't found the right balance, some times you over shoot and some times under shoot, it takes practice and time. That being said, nobodies perfect, we all lose our cool and I also wanted to point out... .
In reality, I get shaky, lightheaded, my voice struggles to come out, and I am emotionally reactive.
this is anxiety, it's normal, it's actually good to have it under certain conditions like cramming for an exam, if it doesn't stop or you feel anxious at inappropriate times, I'd suggest to talk to an MD or GP about anxiety. You can use mindfulness with triggers, it's a tool for anxiety as well,
Triggering and Mindfulness and Wise MindWe're all human and we're not perfect all of the time, I think that the most important advice is don't be hard on yourself, set changing your responses as a goal and you'll eventually get there.