Perhaps, it was the greatest enemy for us but it is usually happen to newbies. This is one thing that we have to focus on how to manage well because even though we have gained a high level of knowledge and skill, and experience but still we can't manage to control this stuff, it was impossible to reach our goal. And I'd never find it difficult if we really wanted to succeed and have profitable trades. In fact, as we can see, a lot of people get into trading and fail and this is because of uncontrollable EMOTIONs.
Emotions are hard to resist because that’s part of being a human. And in everything we do, different emotions are always present. That’s why it’s difficult to control it even in trading especially if you are trading to make some profitable gains and to make your trades worth the risk. The reason maybe why most traders fail in trading is that they keep on insisting to stop their emotions, when in reality emotions can’t be stopped but can only be lessen or minimized.
The bottom line is that if someone can control their emotions, they will be able to trade calmly. Experience and flying hours also greatly influence everyone when making a decision. And this is where the importance of a strategy in trading, someone who has high flying hours is sure to have a sufficient level of confidence to make a decision. Emotions will never disappear from someone's mind because it is natural and everyone has it, it's true as you said that we can only control these emotions. High flying hours will increase us in experience and emotion will help someone reach a decision, then the strategy will produce something according to what we are targeting and self-control factors will limit us to minimize losses.