Looking at the USDJPY will provide perhaps the most important lesson in trading you can find. Ascertaining what is Market value; what is a high price (and what your decision needs to be) VS what is a low price and what you should do.
The USDJPY is a classic example. Price has rallied for 22 months or so and the price has risen enormously. This is OVERSOLD and you can see how Traders (Who know what they are doing) have moved into the market and pushed it down. We called it and said this would happen because we looked at the market from a factual non biased perspective.
We also looked back to key price action levels to determine what further adds to the concoction (evidence) for a short.
Tie it all together and you get a fall you can take gains on. We can now look for further falls after price pops until we reach Price levels to get final exits, again using our knowledge of market value.
All in all, when trading any market, just do it factually. No stories. High price V Low. That's what works!
I hope that helps as always!