i think no body want to face loss and it is never welcome happily specially in forex trading. but on the other hand if you are a professional trader than you should have keep i mind that profit and loss are essential part of trading. you can not earn profit every time. some times you can face loss due to many reasons. so best thing after facing loss is just to keep calm and be patience. instead of being angry try to understand the reasons of you loss and and your mistakes.