Exits are the hardest skill and the least taught. The fix is simple: scale out. Sell part of your position at planned levels on the way up, so you lock in gains and reduce risk.
Taking some profit is never wrong. A position you have de-risked lets you hold the rest calmly, because you are now playing with the market's money.
Key takeaway
Sell in pieces at planned levels. Never try to sell the exact top.