It is very difficult to ask people not to panic in a trade that involves a certain amount of capital, most especially when the market has been seen overtime to be going down by the day. Considering the fact that the fate of cryptocurrency is not yet known, makes it even more difficult for investors to keep calm.
I do not buy in to this idea at all. The only thing that would make it difficult is if they've invested too much. For those people that have invested a sensible amount the swings might be painful but they won't be putting a huge emotional strain on the person so as to force them in to making bad decisions. How much to invest is one of the first decisions but if the wrong decision is made then that can lead to more and more bad decisions
Crypto trading is all about sensible decision making and if one is not able to make good desicions and unable to control his emotions then trading is not suited for such type of persons.