It is not easy to stay calm in trading especially if all coin has decreased too deep. I see that many people still get panic on this and they cannot hold any longer and many of them are attracted to sell the coin at the low price. I agree that we must learn about how to not panic in every situation so we can remind calm and we can make a decision regarding what happened in the market.
When the price of bitcoin is still cheap, only hundreds of dollars for one bitcoin price drops no one panics. Then the price rises to thousands of dollars for one bitcoin, people begin to question when prices go down, then make an analysis as if bitcoin is not good for trading. Actually, bitcoin is the same as fiat currency, when prices rise and fall. So use logic, and analyze it so you don't lose, because if you know when prices go down, it can also be profitable.