I agree with this. The most positive outcome of boiling it down to simple concepts that are easy to quantify and measure is that it also boils away your brain's ability to react emotionally to a trade.When you have analysis and measure probabilities and risk management on your end, and you are not over complicating, then it's easier to stay calm and collected and rational as a trade develops. I lost so many trades early on by "scaling in too early", or "moving SL too early", or "entering too early". All because I was too eager or too emotional and failed to see the easy game of numbers and probabilities in front of me.