considering the fact that trading is highly profitable and responds majorly to knowledge and skills, this means its needs full attention and concentration consistently.
In my opinion full concentration is not facts about trading, but understanding of risk management, knowledge of trading and also experience is a must have,
there is one way to do these three things, by understanding your own potential and determining the Time Frame to use.
when you have done that, full concentration is actually not needed, because trading is not about shooting animals in the forest, but about anticipating every market movement.