The best way to minimize your losses is to always start small and add on to your trade once it starts going in your favor. When you take your time to set up a sound trading plan you will find that you win much more often then you lose. This forex strategy puts you on the correct side of probabilities because outside of the this is just a pure gambling.
Set a reasonable money management setting and set your TargetProfit always more than your StopLoss is or you can consider a Trailing stops. This way you are more protected. When you lose you lose only a little but when you win you win big.
Losing is just part of the market but if you can learn something from every lose and you write it down, your trading will for sure grow. You dont have to lose all on a one losing trade. Those can even be some of your most profitable trades because they can show you new insights that can lead you to bigger successes.
Always made a quality log and record when you test and build your system. Then when you find the good system just stick and discipline with it.That iss the only way you can make money in forex in the long term.