The first thing you need to work out is your risk/money management. How could you let one trade wipe out more than 10% of your account?
I know it may have been more than one trade but that's even worse, after a couple of bad trades you should stop, analyze what happened, write a journal if you have to, the purpose is to learn from your mistakes, not regret making them.
It is necessary to learn to spell out how much you are willing to loose on a strategy/idea/trade/day etc. and to accept the possibility that you will lose rather than fighting (with yourself and the market) to make every trade a winner.
Confidence in trading is rarely achieved from the ever so common "i figured it out"/winning streaks. It comes from the fact that you will eventually (hopefully) learn to accept the fact the "shit happens". You have to take the loss. Get up. Analyze what happened, what you felt, what was going on in your mind, understand that, tame yourself, come back the next day and be determined to not repeat the same mistakes.
The day you learn that taking losses is a part of the game, you will figure it out.
I am not here to bash you, or tell you that you are not ready, cause you may never be more ready than right now. Scale down your account, do things differently, work on your money management skills, strengthen your mind.
Another thing, don't know if you will find sense in it, but high risk is not always equal to high return actually it quite the contrary, the best trades will usually turn out to have the tightest (mental/hard-stop the later being better to begin with) stop-losses. And if you go wrong wait for the next setup, btw in this case having low risk is not a setup.
Cheers!!