The more your knowledge of crypto-currencies becomes, the less you will panic and fear, so always engage in training.
This is a very important point people panic because they do not understand the nature of cryptocurrencies, they do not understand that bitcoin is probably never going to disappear and that it is always going to go up in value as long as the demand goes up, something that is almost guaranteed, and once you understand that you have no problems to keep holding your coins no matter what.