Cut loss! Cut loss! Cut loss! All my altcoin decrease. Bitcoin killing me.
Do not get panicked. Bitcoins being the most popular among all cryptocurrencies wont harm you in a bad way if you prefer altcoin for the purpose of trading.
You can recover your losses easily by buying more altcoins at lower price and then wait for the prices to increase so that after selling them in the time of pumping phase you can earn some money and buy Bitcoins instead of using low valued digital currencies for the purpose of trading.