A sudden unexpected loss is not something new in the stock trading.
It is in fact, is a part of the multifarious scenarios that the stock market presents to its participants from time to time.
They go back to their life never to come back again. Prepare with alternative ways to tackle such a situation in the future.
When you do this, you will definitely emerge again as a professional stock trader!
Good luck and safe trading
Asoka Samarakone