My trading experience
The most important thing I have learned is don't ever ever get panic and patience is your only friend in trading and don't ever invest in one coin with all of your capital
now you know what to do mate. Lol and i think that is a good example to anyone who always panic to sell when the price is dumping , and also to those who invest all their capital without strategy and knowledge what will happen at the end. So to prevent a huge loses we must buy what we afford to lose .. And make sure that before to trade make some analysis always to ensure when will be the right time to sell.