Trading anxiety can be a problem for traders who have suffered big losses. Anxiety can cause lack of confidence, fear of making mistakes, and can take away the ability to be objective.
If you find yourself sick and tiered, upset of your trading account, it is very likely that the risk management that you use is not good enough. To overcome this you must make a plan. Thing about what you did that got you in the current situation. Once you have identified the mistakes, make a trading plan to correct the trading mistakes, write down on paper how you will avoid them in the future, so that you will not end up in the same situation.
Forgive yourself
Nobody is perfect, we all make mistakes. The most important thing is to learn from your mistakes. There are no perfect traders in the Forex market (or any other financial market). Even experiences traders have from time to time a significant lose.