Successful traders are never impatient but unsuccessful traders are never patient. This is the cardinal difference between a successful and an unsuccessful trader.
the main difference between successful and general trader , its all about self commitment. nothing without it. so we the traders should develop our trading habit first of all.
In forex, losses are just a part of it that will happen from time to time. I think the best thing you can do is take steps to minimize those losses, like placing a SL, for example.