The coin that hasn't risen for a long time may suddenly have market activity that you even forgot about; if you get in and make a profit, don't be greedy, take your profits and exit. If you haven't entered, don't chase the high. If you can't help but enter at a high position and find a declining trend, you will immediately incur losses and should exit. There's no blame for being deeply trapped; there isn't much market activity afterwards, and it's uncomfortable on both sides $MASK