Depends on your knowledge. If you're a noob, then day trading is nothing more than gambling. On the other hand, there are people earning millions day trading using their skill and experience.
It requires good knowledge to be able to survive with daily trading and it must be a combination between luck and skill. If we only rely on our feeling in daily trading, surely that will lead us to a very bad result at the end.
Yes it needs emotionless and feeling less to be a day trader as it will not let you get sell at the time of fallen price, it takes to have high knowledge and good information about trading, instead of relying on others to advise you make your own decisions about trading as if you are a day trader if needs to be lucky and good informative mind which will help you make right decision at the time of need.