Most traders are not just psychologically stable and would always be style-drifting which is not good in the world of trading. The best traders would stick to what they know and if they've not gotten the right system, they should rather continue training and never call themselves a trader until all is sorted out.
Not having the right psychological mindset is going to set you back as you want to become a trader some individual fail to see trading as a serious business that need lots of attention. Some individual see trading as gambling and they just make their bet on trades then hope that it is going to give them profits. Majority of the traders are in loses as they think they don't need to learn how to trade before they can begin. Day trading can work for some traders but it won't work for everybody as not everybody can be mentally strong to trade again without emotions after losing the previous day. Long term trading is a little bit like investment therefore this has to favour more individuals to make profits.