With all respect, I think emotional discipline only makes sense when the method is profitable in the first place with every entry/exit/adjustment rule already in place.
Otherwise we deal with fuzzy edge, an art if you wish. Which is OK, but it's extremely difficult to share talent.
Hence the problem for newbies: there are not many 100% mechanical profitable edges who's owners would like to share (for obvious reasons). And fuzzy edges are not easy to study for someone not "born" with the appropriate inclination (intuition, ability to "feel" the market, whatever).
It's not a question of "emotional discipline" but of emotional maturity. But the losing trader will either not acknowledge that this is a problem or will acknowledge that it's a problem not be able to do anything about it. He not only does not have the trader's mindset but probably doesn't even know what it is.
