GeckoTime,
This will sound condescending but is not meant that way,
As soon as you realise that attempting to predict market direction is futile the sooner you will not have days like you have had today.
I have also gone through the stage of thinking that I could tell when markets would be overbought, oversold, rally, whipsaw in fact virtually everything. Whilst I had some success in the short term I always ended up losing in the long run.
Grey1 is right, if nothing else a sound money management strategy will prevent you from incurring this kind of loss again. But one of the worst things you can do is to is try and get revenge on the market. It will result in a total disaster and is an indication that emotions are controlling your trading and not your mind.
Put it down to experience and try and identify the traits in your self that allowed this to happen. Then put an action plan in place to address those traits, it can be done, I know because I have done it.
Paul