The best thing to do during this kind of period is not to sell. It is ridiculous to sell at a loss. If you have the capacity, it is a good time to invest by ceasing this rare opportunity. The process of making people millionaire in future is on and only the wise people will see this. So many cryptocurrencies will not be this cheap for long.
I always tell my friend who have invested in bitcoin to be patient and cool in red alerts of the market. In these days the price of bitcoin is not increasing and it is very hard time for all investors because they are not making any money. I tell my friends to hold your coins and dont sell them otherwise they would lose their money. I encourage them about the bright future of bitcoin.