Panic is a bad move in investing, usually panic will make people wrong in making decisions, the habit of the coin will keep pumping at a certain time, but not forever the coin will be in that position, I don't think there is need to panic in this situation, need to prepare steps steps if this happens, so that at some point we don't panic and have a way to get out of the problem.
Panic is actually not a problem, because it can still be completely eliminated when a person experiences it suddenly, because panic appears by itself when every condition starts to change for the worse in the market and the person is still in the investment stage.
Panic sell or buy is big problem for every trade and they always trade depend with other information, when some one make fud or fomo never allowed your self control by them. Keep on with your confidence and never give us them chance to make you panic, basicly you need to control everything when price dump keep hold it if you buy good and potential altcoin, but never heard with something big or anything if you got the coin have pump almost 60% until 100% to buy because very risk and you will loss your money when coin raise all time high but keep to buy.