How should we approach sudden large market surges with the right mindset and strategy?

I FOMOed during yesterday's big rally.
Last night, I kept hearing my brothers shouting: Damn, people are surging, damn, STRK is surging.
I got FOMO and bought a few coins, but I lost money.

So I carefully summarized that in such special market conditions, the most rational approach should be:
1. Overcome FOMO and stay rational
The most dangerous signal during a surge is "FOMO"—fear of missing out. Once this emotion takes over, there's a high risk of buying at the top and becoming a bagholder.
We need to recognize a reality: we can't buy at the lowest point or sell at the highest point. If a certain trend is confirmed, entering after the trend becomes clear is not too late.

2. Adjust trading strategies based on your position
Situation A: You already hold a certain proportion of your position, and profits are decent
During yesterday's surge, you should take profits gradually, selling in stages.
This approach ensures you lock in profits while not missing out on potential big moves later.

Situation B: Your profits are already substantial
You can sell your principal directly, leaving only profits to run. This makes your mindset very relaxed and allows you to calmly face any large fluctuations.

Situation C: No position or a light position
I believe this tests your mental strength the most.
First, we need to be clear: no matter how good the market is, initial surges often have technical pullbacks. So, don't impulsively buy during the first big green candle.
After a correction, you can gradually build your position, but avoid going all-in or heavy on one shot. Divide your planned investment into several parts.
Buy at the first support level, then buy again at a stronger support level—this helps to effectively average your entry price.

My personal advice is: no matter how confident you are about the market, never go all-in.
During big rallies, leading coins often experience explosive growth. In such times, look for second or third-tier coins in the same sector—they may also have a wave of catch-up, suitable for short-term gains.

In summary, I believe successful investors are those who can attack when appropriate and defend when necessary.
A core belief ingrained in me: if the crypto world were to zero out tomorrow, I must still be able to survive.