DITTO - I believe your suggestion will be very useful and it is indeed a matter of "trusting" your rules.
I never fail to swear when I do something stupid. Its Pavlovian. Good thing I don't have a family about. During my Bright days, I had to internalize my swearing. Made my blood pressure boil over. I swear at myself BTW, not the markets. Occaisionally my broker gets my wrath, but only when they seriously mess up. Jay