After spending some time studying forex fundamentals/economics i've realised that if a currency/pair is trending, then there are obviously fundamentals driving it. What i realised is that no fundamental will always have the same affect in the market, one year the carry trade could be the cause, the next year it could be high and consistent GDP,commodities, etc. That means that if there is a trend from time X to time Y that during X and Y there are certain fundamentals driving that, and won't be the same year after year. Even if GDP is high and consistent, the trend in a currency may be down, for example low interest rates cause selling due to carry trade investors. In other words, whenever there is a market trending, look for the fundamentals which agree with the trend, as they are possibly the drivers of it , and pay attention to those variables and make sure they keep up. But economics isn't always a perfect science and even if you have all the variables lined up something else could , COULD, effect/reverse the trend. meh.