yes thats true, but the problem is the traders cannot apply money managment rules for ever, may be they get some patience to be discipline for a month or two then after that they start to be greedy and feel so confident than before then --->lost.
Trader must study where they are wrong and which mistakes they are doing so that the can learn more.
you are right i think that we have lost because of the greed and the hate of lost its true nobody like to lost but i think that when you have see that the markets will go against as we should invers the deal even with some of lost
Lots of trader lose their money in Forex because maximum trader trade alone. so maximum time trader can not be sure is he/she rite or wrong. if traders trade group wise then i think loss possibility minimum. a trader know everything. money management, analysis etc etc. but trader always can not give rite trade. 2/3 trade make wrong.simply. when a trader can not give rite trade i think then he/she no need to give any trade. he/she need some break.
We just have to make sure that we will be successful with it.When markets are in a jiff they tend to move fast and a strategy devised before can't work during that time.Market is always change, for example we already set a good money management for particular pair.