I know is manipulation about how dropping price bitcoin or altcoin. But I'm not gonna do that because of panicking. Because i believe that you wont regret if you sell your coins in your desired profit. Cryptocurrency has a lot of room to improve in the coming years so dont worry if you will able to sell your coins high.  Those people who are always talking about the end of bitcoin or altcoins is the same people who works hard to get this coin.