When you attach your emotions to trading it affects your decision making, sometimes it can be helpful but bringing emotion into trading is a bad idea. Every trader is different in their own ways, to keep emotion in check can be difficult, formulate your trading strategy based on your needs and market knowledge.
Emotions are connected to every human being but what really matters is how much control you have over your emotions. Trading is a platform where you have to make very thoughtful and patient decisions.
All experienced traders do not act on emotions based on their experience and full knowledge of the market. Most of the new traders get emotional and make wrong decisions due to inexperience. Traders who cannot control their emotions should stay away from trading as the price volatility is high and emotional people will only lose here. Each trader's way of trading may be different but the principles and methods of trading are the same for all.