When the market price falls do not panic to sell all BTC you have. You certainly already know that BTC has experienced a price jump in an instant, so with the occurrence of BTC price decline at that time do not make you throw your BTC. You have to keep your BTC because there is a very big chance that BTC will experience a price rebound again as it did last year. Or maybe you can sell some BTC you to buy altcoin, it's up, you are free to choose. Most importantly do not spend your BTC.