First: Don’t worry about the length of holding time, but pay attention to whether the market has reached its peak.
Second: When the price of the currency rises, if you are obsessed with pursuing higher profits and are reluctant to sell the currency you hold at a high price, the result of greed is often "missing opportunities."
Third: Stop when you are ahead, and keep the results. It takes wit and patience.
Fourth: Sell when everyone on the street is talking about "blockchain".
Fifth: Any greedy investor will regret not buying at a low price or buying too little when seeing a big rise. The main speculators are taking advantage of the psychology of retail investors who are eager to see the rise and pull up shipments.
Such words are often heard in the market, "If I had done this earlier, I would have lost less money", "If I hadn't hesitated, I would have made a lot of money"