Holding is really not the only strategy, this is a trading market, then the most important skill we need to learn is trading. Only transactions can let us know the risks of this market and understand how to make money. Unless you have a lot of money, you can take some of it as a long-term investment, otherwise don't easily hodl
You are right when you make some profits it is the most ideal strategy to lock your profits and sell when you feel that you have made enough profit with the trade.