Sell all crypto-currency to fiat IMMEDIATELY. BTC will dive -30%. Altcoins will decline even more. SegWit and scaling has been defeated on both Bitcoin and (at least near-term) also Litecoin. Also there are macroeconomics things going on which will also hit gold and every asset except USD. Store your money in USD or altcoin USDT (dollar peg) temporarily until this dip has concluded