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?
Both fear and greed have their good part and can contribute to a trader making more profit as well, whenever we talk about greed and fear, it's absolutely unfair the focus on its bad side, every emotion in trading, even patience, can lead to loses if not exercised properly.
Take for example, I have opened a trade one day in the futures market, and after a couple of hours, I already made about x4 profit, I wanted to close the trade but somehow, I became greedy for more, I allowed the trade to still run for a while, and like an hour later, I came back and cashed out with over x12 in profit, now, this was the day that I discovered that even being greedy at times can be good.
And talking about fear, fear is helpful, most especially when you are about to enter a trade that you have not well analyzed, or studied, fear of loss can actually help you, prevent you from entering that trade, which may likely would have lead to a loss.
Now, talking about patience, I've seen a trader who opened a trade, and in no time, the trade was in over x5 profit, to him, he decided to be patient, but I think he's patience later turned into him being too greedy, the market later came down, and he ended up losing all the money he put into that trade.
So, every emotion have their good and bad side, it all depends on how we use them, greed can bring you more profit and can bring you loses, fear can prevent you from entering a trade you likely will lose, and it can also make you lose opportunities to good profit, patience as well, can make you good profit if well exercised, while it can also lead to a loss when it goes from being patient to being over greedy.