The forex market is not a stagnant market. It is highly volatile, and keeps changing trends very frequently. Some price trends last only for a few weeks, whereas some become permanament for years. That is why one strategy doesn’t always last. You can use the same technique of trading (like day trading, or swing trading, or scalping). But you will need to modify and bring changes in other aspects from time to time. Things like risk management, money management, lot sizes, pips traded, timeframe, needs to be adjusted as per the market conditions.