That is why you should learn deeper about trading so you know what you need to do based on the current situation. You can not trading without making analysis because that can lead you lose your money. If you can analyze the market before you trade, you will see the chance to make a profit. You will know when you enter and quit trading because you can see that from your analysis so you can directly act according the situation.
A good trader will control their emotions and not involve it in trading because that can disturb their analysis and make them difficult to decide. Trading is fun but they know how to handle the risk not to become big.
Trading is about knowledge converted into experience, and said experience - into profit.
However, emotions sometimes block the potential of your sessions - they may help in some situations, but mostly, they push you toward acting irrationally, which is bad, of course.