I think that holding or selling depends on the market conditions at the time. And invest in the encryption market must also maintain enough patience. Because the risks in the encryption market are high, and cryptocurrency is also a long-term investment.
Definitely it depends on the Situation of the market, you need to react accordingly if you need profit. Well this is the best Chance to buy and hold the coins as the market is full. Make a plan before investing and make sure that you invest in a right coin and secure yourself.