Every edge is important and exponentially adds to the one before, but the emotional edge is the one that opens the door to optimal performance and leads to other, softer, expansive edges.
a quick anecdote, when I was trading FX options back in the mid-80's as the market was just beginning, I distinctly remember times when I felt completely in tune with the market. I used to joke I would sit down in the morning, plug myself in and start trading. during those periods, profits flowed as the market movement was almost visceral to me. alas, that was not always the case and the key to any success I had was to recognize I had lost the flow and stop trading. all of those edges faded. the sooner I stopped, the better things turned out, but it was a very touchy-feely idea.
a quick anecdote, when I was trading FX options back in the mid-80's as the market was just beginning, I distinctly remember times when I felt completely in tune with the market. I used to joke I would sit down in the morning, plug myself in and start trading. during those periods, profits flowed as the market movement was almost visceral to me. alas, that was not always the case and the key to any success I had was to recognize I had lost the flow and stop trading. all of those edges faded. the sooner I stopped, the better things turned out, but it was a very touchy-feely idea.