I think there is pressure in the brain. If someone loses money while the pressure to feel the trader must be careful when you invest more loose his blood pressure also rises, he may have taken SL before, I want to tell the Forex trading business is a business of almost high brain pressure, this type of business the pressure remains in every business, but in other businesses this pressure may appear in a month or a year, and in Forex this type of pressure appears every day, every hour even in every minute, we can use SL to reduce our pressure !! !