if you panic.
if you get away from your plans.
if you do not use stop loss.
if you insist on to gain from the asset you lose.
Yeah, it all is indeed a cause of fatal and very common in all the people who do it. Because someone may experience disturbance of mind if they are too heavy to think of something that actually can only be obtained by means of figured that calm and unhurried. Try to see around us in order to get a feel for something we haven't felt before, because by looking around us then everything will make a good profit for everyone