Volatility is what keeps your trading activity moving. However, if you're not careful it can also completely destroy it. When volatile, the market moves sideways, which makes spreads grow and your orders slip. As a beginner Forex trader, you need to accept that once you are in the market, anything can potentially happen, and it can completely negate your strategy.
An investor can profit from the difference between two interest rates in two different economies by buying the currency with the higher interest rate and shorting the currency with the lower interest rate. Prior to the 2008 financial crisis, it was very common to short the Japanese yen (JPY) and buy British pounds (GBP) because the interest rate differential was very large. This strategy is sometimes referred to as a "carry trade."
In a short setup, the market needs to be trading below the 21 EMA first. As the market retraces back to the moving average, day traders may be anticipating a turn lower from it. Therefore, if a seller bar forms on the moving average it could be a sign of further selling momentum. However, a stop loss is always used to minimise losses in case the market turns the other way.
The possibility of losing your investment is high, so it is advisable to only use risk capital (money that you can afford to lose) when engaging in Forex trading. The Forex market offers high levels of leverage to traders. Leverage has both the possibility of high returns and high losses, and should only be used with discretion. Be disciplined and don't be tempted to overtrade.
One unique aspect of this international market is that there is no central marketplace for foreign exchange. Rather, currency trading is conducted electronically over-the-counter (OTC), which means that all transactions occur via computer networks between traders around the world, rather than on one centralized exchange. The market is open 24 hours a day, five and a half days a week, and currencies are traded worldwide in the major financial centers of London, New York, Tokyo, Zurich, Frankfurt, Hong Kong, Singapore, Paris and Sydney—across almost every time zone. This means that when the trading day in the U.S. ends, the forex market begins anew in Tokyo and Hong Kong. As such, the forex market can be extremely active any time of the day, with price quotes changing constantly.