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There are some questions which is hard to answer like - when is the best time to buy and when is the best time to sell?
I obviously understand FOMO, and have been a victim of it myself, but I never understood how people get mad at a particular project when looking back they clearly went all in during peak.
The best is when the angry bag holders that bought in peak greed, then sold at the max despair. When it seems there is no chance to recover. That's called buying high and selling low, but some people never catch on. Sell when people are calculating how long until they can pay off their house if this keeps up, and buy when everybody is bullish.
Nobody can ever predict the top and bottom with repeatable accuracy, so finding an entry/exit point or DCA'ing in/out is a good idea. Of course it must also be a project you believe in. I wouldn't buy low cap altcoins right now, despite they have the highest growing potential.