Do you need to wander? Either position size for 50% loss or just understand it's part of the game you are playing and is completely normal/acceptable. No keys will save you from fleeting liquidity.
If you're mentally struggling with a personal event in your life...that could be why you incurred a big loss on 10/17/18. Dig deep into yourself to determine if something outside of trading is impacting your "A game" as you called it. Next, resolve the problem prior to returning to trading. wrbtrader
It took the weekend, but I have since learned. The snip-bit of a quote I have in my trading journal is “fail forward”