How long to keep your strategy running before you decide that its not working anymore

 

How long to keep your strategy running before you decide that its not working anymore

 

I Think 5 Years

 

I tries one strategy if it not works on several trades I have to change it. My aim is to grow my capital if strategy is for loss I can adopt any other to trade. In forex we can change strategy according to our needs. Or our strategy should be flexible so that we can get rid of loss effectively.