Yeah Me too. I experienced that too. I gained so much but it the end I have loss a lot. Maybe you cannot blink of an eye and make watch to market.
Well, it means that you are learning from your mistakes and making those failure as a ground for you to be enlightened, I myself don't let my big losses in life as failure but as a foundation for me to become braver and can handle and face things and challenges in the future.
Sometimes people make big losses as a bad thing and doomsday for them, so most people who suffered great losses will feel hopeless, but you should make it a great lesson for you, so that you are stronger and more careful, as it is today, the price decreases very deep, and my money decreased by over 60% but I will not give up, I will continue to hold back and will definitely get big profits