Quote from IronFist:
test your theory.
Open two demo accounts, on one, do what you would normally do, and on the other, do the EXACT opposite.
So if one loss is becoming too big and you exit because you're freaking out, you have to exit the other one at the same exact time. No saying "oh, well this one is winning so I'll hold it longer and let it ride." If you do that, you're not doing the exact opposite on both sides.
Do this, and report back here with your results.
Both will fail for the reason that his emotions are not straight