The most dangerous emotion in trading is the fear of losing money to. Most traders hold this type of feelings while trading. But You have to be emotionless while trading. No emotional attachment is allowed in trading.
It is indeed important to learn how to control your emotions. I don't believe it's possible to reach a state of complete emotionlessness but we can definitely practice and choose not to listen to our feelings.
Yes agree with you. Fear and greed are very dangerous in trading. Interestingly wheb it comes to forex trading, people become too much irrational. They want to make their account double, triple overnight.