can't really relax. you forget that the world economy is now interconnected.The USD is not the only currency around. Sometimes I live in Thailand(one of the advantages of being a Forex trader) and I am sure the Thai baht will still buy everything I want even if the USD becomes so much toilet paper. The same goes for the Ringit and even the Rupee or Rupiah. Relax and enjoy being in the best profession in the world.
with unprecedented uncertainty in the air right now, we can't be sure if the world will suffer from a contagion if and when a major world crisis erupts. of course, I do hope that any future crisis will be contained and will not severely affect other parts of the world.