Quote from alfonso:
GP, let me ask you something.
How do you conceptualize of this "ceiling" you talk about?
I think it is very simple to understand if it was some hurdle that one was trying to overcome during a single event, like making 50 free throws in a row.
Then it would be a case of "damn, made 48 again, just can't seem to get past that level".
However, with averaging 1.5 pts (or whatever, I'll just use that), it's a little different. It would have to be in the context that you've been trading X number of months, you look back at your performance, and, lo and behold, you've been averaging 2pts. (!!! woo hoo!)
Psychologically, I suppose that if a person truly holds a belief that says it is just damn not possible to beat 1.5pt over a "significant" period of time, it is possible that some "self-defeating" or "self-sabotaging" behavior could set in that would create some sort of self-fulfilling prophecy that drives his performance back down.
Personally, I'm skeptical that this is the case.
Firstly, it's usually the present we are concerned with. Ie, when I have my current trade on, I'm most interested in seeing its outcome -- not so much concerned with its impact on the overall, long run, average trading performance; that is something that tends to get considered at other, less frequent, times. So, if trading performance is going to suffer because of an alleged limiting belief, it would have to be affecting the *current* (present) trading performance. But if the state of mind regarding the current trade (the present time) is not concerned with the overall long run average performance (the domain in which the limiting belief lies), then I find it very difficult to see how this limiting belief could affect the current trade.
When you consider that the long run average performance consists of all these separate current performances, if the latter is not being affected, then, ipso facto, neither is the former.
Secondly, I again have to turn to the established trading records we have of the top peforming funds. As they have not managed to achieve returns as high as the 5-6 pt ES/day equivalents, we are left to explain why not. Your suggestion seems to be that it is limiting beliefs and self-fulfilling prophecies at work. Well, I believe it is unlikely, but it is possible. Perhaps, though, it is simply the case that, as we all know, markets change and these traders were not able to adapt so well to the changes, and were thus not able to continue their top notch performance; which, ultimately, simply says that trading at such a level is just one very, very tough gig.
You know, it's one thing to quickly appraise an activity and determine what is *possible* to achieve in that activity and very much another to actually do it. I could look at golf and say, well, it's *possible* to birdie (or better) every hole therefore anybody that doesn't do it simply has a mental block. Maybe that is the case. Maybe that is what some might choose to believe. Personally, I wouldn't. And I don't really think I'm being a defeatist by not believing it, considering that birdieing every second hole is still ONE HELL of a performance. Just like in trading, to average 1.5pt/day is ONE HELL of a performance.