You become a victim of emotion when you don't have a believed trading system or strategy that works, which guides you to know the entry and existing point of each trade. And to tackle this, one should develop a trading strategy around chart patterns because they are technical analysis simplified which tells you the time to get in and get out of the market because of its proven historical performances in the past.
Emotion trading is very wrong, any trader entering a trade just because he feel like Bitcoin is about to fall or rise will lose to the market. If you don't have a trading strategy or have read and understood the chart to determine which direction the market is heading don't trade. If you can't control your emotions, your emotions will control you and make you always enter the wrong trades or the right trades wrongly. Many individual has fallen victim to their emotions because if this.
Emotions is one of the things that influence many traders, some professional traders still struggle with their emotions at time but what makes them professional is because they can always control their emotions but as a newbie you'll find it difficult to control your emotions.