In forex trading there are many stragey which can be use some needs very good technical analysis and some not require this for example candlesticks not require any strong stragey but if you other technic them yoy should have every professional trader have there unique kind of stragey but influence on stragey from other is very happen thing in forex when you make stragey for trading but suddenly head news about it or pair country which you trade suddenly changed his policy in economic matter then it is necessary for you to change your strategy accorgding to them