Well, that is true and it bothers on the tempting part of Forex which can only be controlled by the trader himself. The person might have an option to choose to trade in a cent account, not considering how much profit to make and spread the capital at a wider range. Also, another effective way is for the trader to, within himself determine what extent or percentage of loss he incurs that he would close the trade for the day so as not to exceed that loss margin.
Here the function of trading plan falls in line. When one has no trading plan then the person will not have the right decision on when to close his trades. Forex trading is a business that when a trader plans not before trading he will be eaten up by confusion and pressure.