Hopefully this falls under trading.
I'm gonna make it short
There are two emotions i believe dictates trade and leads to either gains or losses. Fear and greed.
They are like every investors companion.
Which do you think is more dangerous?
I will say neither of them is good nor dangerous than the other. Both have their take in the crypto market and any other market that relates to buying and selling of commodities. In the crypto trading, as a trader, you'll need to take some analysis that you think is best for you to enter, while at other times, it seems FOMO (Fear of Missing Out) has taken over due to a particular point which probably you didn't see to make your actions or you where not sure of what it will result to.
A well analyzed greed can bring forth profit, if as a trader you know how to protect your profit, otherwise, as the nature of the crypto market is with a high volatility, it could go against you in matter of minutes, wiping away your profit and even capital.
That of fear comes with uncertainty. Not sure where to enter a trade, how to enter or pass.
As ones grows in trading, he/she gathers more experience along side, and will be able to make use of these two emotions in a trade. At this level, these two emotions can be taken as instincts.
Fear to enter a trade,
Greed take profit and open a new entry or yet, protect existing profit and flow with the current trend.