If bitcoin price fall that's the good time to invest in bitcoin and wait for a months or a years. Remember bitcoin price is unpredictable so invest what you can afford to lose. In holding you must have a more more patience if you don't have patience you will not gain profit patience is the key to gain big profit.
Bitcoin price will be go down. It affects the all coin price. Some coin will be down. Some coin will be increase the price. So coin price is not stable it any time to chnage. So follow the market price. Then know the all coin price list and get the information of all coin. If price will be down. Most of the people buy and hold the coin. But before buy choose the best coin. Then buy and hold long time. Coin price is any time to increase. So it not easy to guess coin
Price. So every time check the market price. Then get ideas for time to acct and get more profit.