I dont usually panic, because when we panic the more bad thingns might happen to us. What I do is usually think first, when thinking I get my moment of silence to think clearly. I result to trial and error. Then, Ill figure out which is a more effective solution. Only natural calamaties make me panic, I feel really scared.
It's best not to panic, but I tried not to panic when I just started trading. I have invested so much in Siacoin, I did not panic in the fall of every price, siacoin was almost worthless coin.