When talking about holy grail,the idea around it is a trader to forex at all time without having to encounter any type of loss at all time when we take a trade position,we need to understand there is no such word called 100 percent when we are trading forex because we are bound to lose some trade position regardless of the strategy used when we are trading the market.regardless of the type of analysis we are using or the indicator used when about to take a position,we need to know at all time, we cannot have control over the market regardless of the type of analysis we might have done on any pair.

I guess all we need is a system that works, yea that is the best you can get. There is no system in forex that can get you profit all the time. Though the search for a secret indicator or system will never end.