We know that 'psychological aspect in the Forex is very important and can make the difference between a good broker and a broker that they might lose much money. We see in this article and the next what are the major mistakes that are made in the Forex, seen from the psychological side of the matter. Many traders guilty of arrogance, as after having closed in positive three or four consecutive operations, think they know everything when in reality there is always to learn. It 'just this over-confidence that can lead to serious error, which usually also carry very large and disappointments. The ability to accept their mistakes and learn from their experiences, both positive and negative, will really be a treasure for the broker.