Success is adhering to the paradox of trading. No matter how confident you are in your trade, never risk it all. Only up to medium risk is ok if done deliberately imo. But then it's about building conviction through your analysis as high as you can by going broad into the right and not the wrong areas (secrets). Then channel that conviction mostly into holding strongly, not into large size. The larger the size, the harder to hold strongly, so both are additive towards the limited resource of conviction that you have built in your analysis. Analyze, build conviction and become very confident. And then enter as if you're going to lose. That is the paradox of trading.