Concentration is very important for forex and for every business. but some time we make a delayed booking after some signal or trend analysis then we turn off our computer for a day or a few hours later it's time to rest or for other important work. and yes this happens to most of us ... I was stuck in position with 2 days and I never slept for 48 hours and then I couldn't get up even once and the market time returned to my position when I slept and fell again during itme. ... after waking up I see my account zero ... this story is really true of most of us because lack of concentration can give you the invisible power to open a trade in an uncertain position.