I said 'rigged', not 'unpredictable'. It's actually a good thing. If it wasn't rigged and volatility was really entirely random, there would be chaos.
The edge if you have it is built into your trading system. It doesn't care who has an edge or who doesn't. It is the height of folly to trade having negative expectation. All it is is simple math. Use the formula and see if you have an edge. Otherwise, you deserve to have your head handed to you.
In my opinion, when you win, you keep pushing yourself forward, and when you lose, you learn from your mistakes.
When you win a trade, I believe the strategy you used was effective. And you keep doing the same thing in order to be successful in your future trades. However, if you lose a trade, you must change your technique or trading pattern. And instead of being demotivated, you should learn from your mistakes.
I totally agree with you mate. Always appreciate yourself whenever you are in a winning run, also, never let yourself down even when you get losses. Learn from the mistakes, motivate yourself and try to improve your trading strategies when they don't work.