I was not affected so much there because the majority of my holding are altcoins. Try to diversify your portfolio in future and just hold your coins, the price will rise again soon.
Diversifying your portfolio is good in case a certain coin dump you still have other coins to gain profit. Aside from investing in altcoins, the best is bitcoin as this has the big chance to bring your portfolio into big profit. Once your coin are in loss all we have to do is wait for the pump again.