It's not a good thing to do when coins fall.
Panic is the worst in investing.
Hold your coins that's the best thing to do.
Coins can't just rise.
If you have done a full analysis of the project and know the real prospects of coins in which you invested your money, then there should not be panic. Just Wait and everywhere your investments. But if a person is not sure of their abilities, then nobody will save him from panic.